diff --git a/config.h.in b/config.h.in
index 47773a50f18..903db9cf6c1 100644
--- a/config.h.in
+++ b/config.h.in
@@ -96,6 +96,9 @@
 /* Define if you have POSIX threads */
 #undef _POSIX_THREADS
 
+/* Define to force use of thread-safe errno, h_errno, and other functions */
+#undef _REENTRANT
+
 /* Define if setpgrp() must be called as setpgrp(0, 0). */
 #undef SETPGRP_HAVE_ARG
 
diff --git a/configure b/configure
index 9f34e285e37..bf19735ecd2 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# From configure.in Revision: 1.30 
+# From configure.in Revision: 1.31 
 
 # Guess values for system-dependent variables and create Makefiles.
 # Generated automatically using autoconf version 2.10 
@@ -18,6 +18,8 @@ ac_help="$ac_help
 ac_help="$ac_help
 --without-gcc             never use gcc"
 ac_help="$ac_help
+--with-libs='lib1 ...'    link against additional libs"
+ac_help="$ac_help
 --with-readline[=DIRECTORY] use GNU readline library"
 ac_help="$ac_help
 --with-thread[=DIRECTORY] make interpreter thread-safe"
@@ -692,7 +694,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:696: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:698: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -810,16 +812,15 @@ fi
 if test -z "$OPT"
 then
 	case $ac_sys_system in
-	NeXT|next) \
-		if test -n "$ac_arch_flags"; then
-			OPT="-g -Wall -O3 -fomit-frame-pointer $ac_arch_flags";
-		else
-			OPT="-g -Wall -O3 -fomit-frame-pointer";
-		fi;;
+	NeXT|next) OPT="-g -Wall -O3 -fomit-frame-pointer";;
 	*)	OPT="-O";;
 	esac
 fi
 
+if test -z "$ac_arch_flags"
+then
+	OPT="$OPT $ac_arch_flags"
+fi
 # checks for UNIX variants that set C preprocessor variables
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
 # On Suns, sometimes $CPP names a directory.
@@ -836,13 +837,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 840 "configure"
+#line 841 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:846: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:847: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -851,13 +852,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 855 "configure"
+#line 856 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:861: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:862: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -879,7 +880,7 @@ echo "$ac_t""$CPP" 1>&6
 
 echo $ac_n "checking for AIX""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 883 "configure"
+#line 884 "configure"
 #include "confdefs.h"
 #ifdef _AIX
   yes
@@ -906,12 +907,12 @@ if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 910 "configure"
+#line 911 "configure"
 #include "confdefs.h"
 #include <minix/config.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:915: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:916: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -957,11 +958,11 @@ else
   ac_cv_c_cross=yes
 else
 cat > conftest.$ac_ext <<EOF
-#line 961 "configure"
+#line 962 "configure"
 #include "confdefs.h"
 main(){return(0);}
 EOF
-{ (eval echo configure:965: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:966: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   ac_cv_c_cross=no
 else
@@ -979,7 +980,7 @@ if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 983 "configure"
+#line 984 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -987,7 +988,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:991: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:992: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1002,7 +1003,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1006 "configure"
+#line 1007 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -1020,7 +1021,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1024 "configure"
+#line 1025 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -1041,7 +1042,7 @@ if test "$cross_compiling" = yes; then
   :
 else
 cat > conftest.$ac_ext <<EOF
-#line 1045 "configure"
+#line 1046 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -1052,7 +1053,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-{ (eval echo configure:1056: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:1057: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   :
 else
@@ -1082,12 +1083,12 @@ if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1086 "configure"
+#line 1087 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1091: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1092: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1120,7 +1121,7 @@ if eval "test \"`echo '$''{'ac_cv_header_dirent_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1124 "configure"
+#line 1125 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_hdr>
@@ -1129,7 +1130,7 @@ int t() {
 DIR *dirp = 0;
 ; return 0; }
 EOF
-if { (eval echo configure:1133: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1134: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_header_dirent_$ac_safe=yes"
 else
@@ -1160,7 +1161,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldir  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1164 "configure"
+#line 1165 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1172,7 +1173,7 @@ int t() {
 opendir()
 ; return 0; }
 EOF
-if { (eval echo configure:1176: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1177: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1199,7 +1200,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lx  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1203 "configure"
+#line 1204 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1211,7 +1212,7 @@ int t() {
 opendir()
 ; return 0; }
 EOF
-if { (eval echo configure:1215: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1216: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1236,7 +1237,7 @@ fi
 was_it_defined=no
 echo $ac_n "checking for clock_t in time.h""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 1240 "configure"
+#line 1241 "configure"
 #include "confdefs.h"
 #include <time.h>
 EOF
@@ -1260,7 +1261,7 @@ if eval "test \"`echo '$''{'ac_cv_type_mode_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1264 "configure"
+#line 1265 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -1291,7 +1292,7 @@ if eval "test \"`echo '$''{'ac_cv_type_off_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1295 "configure"
+#line 1296 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -1322,7 +1323,7 @@ if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1326 "configure"
+#line 1327 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -1353,7 +1354,7 @@ if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1357 "configure"
+#line 1358 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -1371,7 +1372,7 @@ int t() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:1375: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1376: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_type_signal=void
 else
@@ -1393,7 +1394,7 @@ if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1397 "configure"
+#line 1398 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -1424,7 +1425,7 @@ if eval "test \"`echo '$''{'ac_cv_type_uid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1428 "configure"
+#line 1429 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 EOF
@@ -1526,7 +1527,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1530 "configure"
+#line 1531 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1538,7 +1539,7 @@ int t() {
 dlopen()
 ; return 0; }
 EOF
-if { (eval echo configure:1542: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1543: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1570,7 +1571,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ldld  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1574 "configure"
+#line 1575 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1582,7 +1583,7 @@ int t() {
 shl_load()
 ; return 0; }
 EOF
-if { (eval echo configure:1586: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1587: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1614,7 +1615,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsun  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1618 "configure"
+#line 1619 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1626,7 +1627,7 @@ int t() {
 getpwnam()
 ; return 0; }
 EOF
-if { (eval echo configure:1630: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1631: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1666,7 +1667,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1670 "configure"
+#line 1671 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1678,7 +1679,7 @@ int t() {
 t_open()
 ; return 0; }
 EOF
-if { (eval echo configure:1682: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1683: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1704,7 +1705,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet -lnsl $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1708 "configure"
+#line 1709 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1716,7 +1717,7 @@ int t() {
 gethostbyname()
 ; return 0; }
 EOF
-if { (eval echo configure:1720: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1721: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1742,7 +1743,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket $LIBS $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1746 "configure"
+#line 1747 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1754,7 +1755,7 @@ int t() {
 socket()
 ; return 0; }
 EOF
-if { (eval echo configure:1758: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1759: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1773,6 +1774,18 @@ else
 fi
  # SVR4 sockets
 fi
+echo $ac_n "checking for --with-libs""... $ac_c" 1>&6
+# Check whether --with-libs or --without-libs was given.
+if test "${with_libs+set}" = set; then
+  withval="$with_libs"
+  
+echo "$ac_t""$withval" 1>&6
+LIBS="$withval $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+fi
+
 
 # XXX need to check whether libreadline.a actually exists there!
 # XXX Also, on some systems, it's libreadline.so...
@@ -1798,7 +1811,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ltermcap  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1802 "configure"
+#line 1815 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1810,7 +1823,7 @@ int t() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:1814: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1827: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1835,7 +1848,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-ltermlib  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1839 "configure"
+#line 1852 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1847,7 +1860,7 @@ int t() {
 tgetent()
 ; return 0; }
 EOF
-if { (eval echo configure:1851: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1864: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1877,7 +1890,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lreadline -l$termcap $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1881 "configure"
+#line 1894 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1889,7 +1902,7 @@ int t() {
 readline()
 ; return 0; }
 EOF
-if { (eval echo configure:1893: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:1906: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -1936,12 +1949,12 @@ if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1940 "configure"
+#line 1953 "configure"
 #include "confdefs.h"
 #include <mach/cthreads.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1945: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1958: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1975,7 +1988,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthreads  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 1979 "configure"
+#line 1992 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -1987,7 +2000,7 @@ int t() {
 pthread_create()
 ; return 0; }
 EOF
-if { (eval echo configure:1991: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2004: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2008,6 +2021,10 @@ cat >> confdefs.h <<\EOF
 #define _POSIX_THREADS 1
 EOF
 
+cat >> confdefs.h <<\EOF
+#define _REENTRANT 1
+EOF
+
 LIBS="$LIBS -lpthreads"
 LIBOBJS="$LIBOBJS thread.o"
 else
@@ -2021,7 +2038,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2025 "configure"
+#line 2042 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2033,7 +2050,7 @@ int t() {
 pthread_create()
 ; return 0; }
 EOF
-if { (eval echo configure:2037: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2054: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2054,6 +2071,10 @@ cat >> confdefs.h <<\EOF
 #define _POSIX_THREADS 1
 EOF
 
+cat >> confdefs.h <<\EOF
+#define _REENTRANT 1
+EOF
+
 LIBS="$LIBS -lpthread"
 LIBOBJS="$LIBOBJS thread.o"
 else
@@ -2073,7 +2094,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lmpc  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2077 "configure"
+#line 2098 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2085,7 +2106,7 @@ int t() {
 usconfig()
 ; return 0; }
 EOF
-if { (eval echo configure:2089: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2110: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2116,7 +2137,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2120 "configure"
+#line 2141 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2128,7 +2149,7 @@ int t() {
 thr_create()
 ; return 0; }
 EOF
-if { (eval echo configure:2132: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2153: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2219,7 +2240,7 @@ if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2223 "configure"
+#line 2244 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2243,7 +2264,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2247: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2268: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2272,7 +2293,7 @@ if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2276 "configure"
+#line 2297 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2296,7 +2317,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2300: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2321: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2321,7 +2342,7 @@ if eval "test \"`echo '$''{'ac_cv_func_getpgrp'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2325 "configure"
+#line 2346 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getpgrp(); below.  */
@@ -2345,7 +2366,7 @@ getpgrp();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2349: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2370: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_getpgrp=yes"
 else
@@ -2358,7 +2379,7 @@ fi
 if eval "test \"`echo '$ac_cv_func_'getpgrp`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   cat > conftest.$ac_ext <<EOF
-#line 2362 "configure"
+#line 2383 "configure"
 #include "confdefs.h"
 #include <unistd.h>
 int main() { return 0; }
@@ -2366,7 +2387,7 @@ int t() {
 getpgrp(0);
 ; return 0; }
 EOF
-if { (eval echo configure:2370: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2391: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define GETPGRP_HAVE_ARG 1
@@ -2384,7 +2405,7 @@ if eval "test \"`echo '$''{'ac_cv_func_setpgrp'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2388 "configure"
+#line 2409 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char setpgrp(); below.  */
@@ -2408,7 +2429,7 @@ setpgrp();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2412: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2433: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_setpgrp=yes"
 else
@@ -2421,7 +2442,7 @@ fi
 if eval "test \"`echo '$ac_cv_func_'setpgrp`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   cat > conftest.$ac_ext <<EOF
-#line 2425 "configure"
+#line 2446 "configure"
 #include "confdefs.h"
 #include <unistd.h>
 int main() { return 0; }
@@ -2429,7 +2450,7 @@ int t() {
 setpgrp(0,0);
 ; return 0; }
 EOF
-if { (eval echo configure:2433: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2454: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define SETPGRP_HAVE_ARG 1
@@ -2447,7 +2468,7 @@ if eval "test \"`echo '$''{'ac_cv_func_gettimeofday'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2451 "configure"
+#line 2472 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char gettimeofday(); below.  */
@@ -2471,7 +2492,7 @@ gettimeofday();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2475: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2496: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_gettimeofday=yes"
 else
@@ -2484,7 +2505,7 @@ fi
 if eval "test \"`echo '$ac_cv_func_'gettimeofday`\" = yes"; then
   echo "$ac_t""yes" 1>&6
   cat > conftest.$ac_ext <<EOF
-#line 2488 "configure"
+#line 2509 "configure"
 #include "confdefs.h"
 #include <sys/time.h>
 int main() { return 0; }
@@ -2492,7 +2513,7 @@ int t() {
 gettimeofday((struct timeval*)0,(struct timezone*)0);
 ; return 0; }
 EOF
-if { (eval echo configure:2496: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2517: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   :
 else
   rm -rf conftest*
@@ -2514,7 +2535,7 @@ if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2518 "configure"
+#line 2539 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -2524,7 +2545,7 @@ int t() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:2528: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2549: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -2548,7 +2569,7 @@ if eval "test \"`echo '$''{'ac_cv_struct_tm'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2552 "configure"
+#line 2573 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <time.h>
@@ -2557,7 +2578,7 @@ int t() {
 struct tm *tp; tp->tm_sec;
 ; return 0; }
 EOF
-if { (eval echo configure:2561: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2582: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm=time.h
 else
@@ -2581,7 +2602,7 @@ if eval "test \"`echo '$''{'ac_cv_struct_tm_zone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2585 "configure"
+#line 2606 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <$ac_cv_struct_tm>
@@ -2590,7 +2611,7 @@ int t() {
 struct tm tm; tm.tm_zone;
 ; return 0; }
 EOF
-if { (eval echo configure:2594: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2615: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_struct_tm_zone=yes
 else
@@ -2613,7 +2634,7 @@ if eval "test \"`echo '$''{'ac_cv_var_tzname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2617 "configure"
+#line 2638 "configure"
 #include "confdefs.h"
 #include <time.h>
 #ifndef tzname /* For SGI.  */
@@ -2624,7 +2645,7 @@ int t() {
 atoi(*tzname);
 ; return 0; }
 EOF
-if { (eval echo configure:2628: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:2649: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   ac_cv_var_tzname=yes
 else
@@ -2650,7 +2671,7 @@ if eval "test \"`echo '$''{'ac_cv_header_time_altzone'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2654 "configure"
+#line 2675 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() { return 0; }
@@ -2658,7 +2679,7 @@ int t() {
 return altzone;
 ; return 0; }
 EOF
-if { (eval echo configure:2662: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2683: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time_altzone=yes
 else
@@ -2680,7 +2701,7 @@ fi
 was_it_defined=no
 echo $ac_n "checking whether sys/select.h and sys/time.h may both be included""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 2684 "configure"
+#line 2705 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -2692,7 +2713,7 @@ int t() {
 ;
 ; return 0; }
 EOF
-if { (eval echo configure:2696: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2717: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define SYS_SELECT_WITH_SYS_TIME 1
@@ -2712,7 +2733,7 @@ else
   if test "$GCC" = yes; then
   # GCC predefines this symbol on systems where it applies.
 cat > conftest.$ac_ext <<EOF
-#line 2716 "configure"
+#line 2737 "configure"
 #include "confdefs.h"
 #ifdef __CHAR_UNSIGNED__
   yes
@@ -2734,7 +2755,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
 cat > conftest.$ac_ext <<EOF
-#line 2738 "configure"
+#line 2759 "configure"
 #include "confdefs.h"
 /* volatile prevents gcc2 from optimizing the test away on sparcs.  */
 #if !defined(__STDC__) || __STDC__ != 1
@@ -2744,7 +2765,7 @@ main() {
   volatile char c = 255; exit(c < 0);
 }
 EOF
-{ (eval echo configure:2748: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:2769: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   ac_cv_c_char_unsigned=yes
 else
@@ -2769,7 +2790,7 @@ if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2773 "configure"
+#line 2794 "configure"
 #include "confdefs.h"
 
 int main() { return 0; }
@@ -2819,7 +2840,7 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:2823: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2844: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -2842,7 +2863,7 @@ fi
 works=no
 echo $ac_n "checking for working volatile""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 2846 "configure"
+#line 2867 "configure"
 #include "confdefs.h"
 
 int main() { return 0; }
@@ -2850,7 +2871,7 @@ int t() {
 volatile int x; x = 0;
 ; return 0; }
 EOF
-if { (eval echo configure:2854: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2875: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   works=yes
 else
@@ -2867,7 +2888,7 @@ echo "$ac_t""$works" 1>&6
 works=no
 echo $ac_n "checking for working signed char""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 2871 "configure"
+#line 2892 "configure"
 #include "confdefs.h"
 
 int main() { return 0; }
@@ -2875,7 +2896,7 @@ int t() {
 signed char c;
 ; return 0; }
 EOF
-if { (eval echo configure:2879: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2900: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   works=yes
 else
@@ -2892,7 +2913,7 @@ echo "$ac_t""$works" 1>&6
 have_prototypes=no
 echo $ac_n "checking for prototypes""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 2896 "configure"
+#line 2917 "configure"
 #include "confdefs.h"
 int foo(int x) { return 0; }
 int main() { return 0; }
@@ -2900,7 +2921,7 @@ int t() {
 return foo(10);
 ; return 0; }
 EOF
-if { (eval echo configure:2904: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2925: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define HAVE_PROTOTYPES 1
@@ -2914,7 +2935,7 @@ echo "$ac_t""$have_prototypes" 1>&6
 works=no
 echo $ac_n "checking for variable length prototypes and stdarg.h""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 2918 "configure"
+#line 2939 "configure"
 #include "confdefs.h"
 
 #include <stdarg.h>
@@ -2925,7 +2946,7 @@ int t() {
 return foo(10, 11, 12);
 ; return 0; }
 EOF
-if { (eval echo configure:2929: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2950: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   cat >> confdefs.h <<\EOF
 #define HAVE_STDARG_PROTOTYPES 1
@@ -2940,7 +2961,7 @@ if test "$have_prototypes" = yes; then
 bad_prototypes=no
 echo $ac_n "checking for bad exec* prototypes""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 2944 "configure"
+#line 2965 "configure"
 #include "confdefs.h"
 #include <unistd.h>
 int main() { return 0; }
@@ -2948,7 +2969,7 @@ int t() {
 char **t;execve("@",t,t);
 ; return 0; }
 EOF
-if { (eval echo configure:2952: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2973: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   :
 else
   rm -rf conftest*
@@ -2968,7 +2989,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
 cat > conftest.$ac_ext <<EOF
-#line 2972 "configure"
+#line 2993 "configure"
 #include "confdefs.h"
 
 struct s { int a; int b; };
@@ -2984,7 +3005,7 @@ main() {
 }
 
 EOF
-{ (eval echo configure:2988: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:3009: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   :
 else
@@ -3000,7 +3021,7 @@ echo "$ac_t""$bad_forward" 1>&6
 va_list_is_array=no
 echo $ac_n "checking whether va_list is an array""... $ac_c" 1>&6
 cat > conftest.$ac_ext <<EOF
-#line 3004 "configure"
+#line 3025 "configure"
 #include "confdefs.h"
 
 #ifdef HAVE_STDARG_PROTOTYPES
@@ -3014,7 +3035,7 @@ int t() {
 va_list list1, list2; list1 = list2;
 ; return 0; }
 EOF
-if { (eval echo configure:3018: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3039: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   :
 else
   rm -rf conftest*
@@ -3039,7 +3060,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lieee  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 3043 "configure"
+#line 3064 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -3051,7 +3072,7 @@ int t() {
 __fpu_control()
 ; return 0; }
 EOF
-if { (eval echo configure:3055: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:3076: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -3113,7 +3134,7 @@ if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3117 "configure"
+#line 3138 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -3137,7 +3158,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:3141: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
+if { (eval echo configure:3162: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -3170,7 +3191,7 @@ else
   ac_cv_func_getopt=no
 else
 cat > conftest.$ac_ext <<EOF
-#line 3174 "configure"
+#line 3195 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 extern int optind, opterr, getopt();
@@ -3182,7 +3203,7 @@ int main() {
 	exit(0);
 }
 EOF
-{ (eval echo configure:3186: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
+{ (eval echo configure:3207: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }
 if test -s conftest && (./conftest; exit) 2>/dev/null; then
   ac_cv_func_getopt=yes
 else