SF "bug" 115973: patches from Norman Vine so that shared libraries and

Tkinter work under Cygwin.  Accepted on faith & reasonableness.

Modules/_tkinter.c

@@ -57,7 +57,7 @@ Copyright (C) 1994 Steen Lumholt.
 #include <Menus.h>
 #endif
 
-#if !defined(MS_WINDOWS)
+#if !(defined(MS_WINDOWS) || defined(__CYGWIN__))
 #define HAVE_CREATEFILEHANDLER
 #endif
 

Python/dynload_shlib.c

@@ -22,8 +22,13 @@
 
 
 const struct filedescr _PyImport_DynLoadFiletab[] = {
+#ifdef __CYGWIN__
+	{".pyd", "rb", C_EXTENSION},
+	{".dll", "rb", C_EXTENSION},
+#else
 	{".so", "rb", C_EXTENSION},
 	{"module.so", "rb", C_EXTENSION},
+#endif
 	{0, 0}
 };