added dbhash; Tk is now officially at 4.0

Modules/Setup.in

@@ -227,9 +227,7 @@ md5 md5module.c md5c.c
 #
 # In all cases also enable the last line (TKPATH).
 #
-# This was designed to build with Tk 3.6 and Tcl 7.3, but also seems
-# to work Tk 4.0 beta.  (Tkinter.py hasn't been fixed though, so for
-# the time being Tk 3.6 is the version of choice!)
+# See the section "The Tk interface" in ../README for more info.
 
 # *** Use ONE of the following two lines, see previous comments ***
 #tkinter tkintermodule.c -I/usr/local/include -L/usr/local/lib -ltk -ltcl -lX11
@@ -254,6 +252,7 @@ rotor rotormodule.c		# enigma-inspired encryption
 
 
 # John Redford's sybase module (requires sybase):
+# (Unfortunately this code is orphaned.  Read the source for documentation.)
 
 #sybase sybasemodule.c
 
@@ -272,6 +271,20 @@ rotor rotormodule.c		# enigma-inspired encryption
 #gdbm gdbmmodule.c -I/usr/local/include -L/usr/local/lib -lgdbm
 
 
+# Berkeley DB hash interface.
+#
+# This requires the Berkeley DB code, see
+# ftp://ftp.cs.berkeley.edu/pub/4bsd/db.1.85.tar.gz
+#
+# Edit the variables DB and DBPORT to point to the db top directory
+# and the subdirectory of PORT where you built it.
+
+#DB=/depot/sundry/db
+#DBPORT=$(DB)/PORT/sunos.5.2
+#dbhash dbhashmodule.o -I$(DB)/include -I$(DBPORT) $(DBPORT)/libdb.a
+
+
+
 # Andy Bensky's "environment" module (contains putenv())
 #environment environment.c