do not exclude win32 from the release tarball, as it breaks mingw build

Makefile

@@ -126,7 +126,7 @@ do_test:
 	perl test/test.pl $(TEST)
 
 release: clean
-	F=mongoose-`perl -lne '/define\s+MONGOOSE_VERSION\s+"(\S+)"/ and print $$1' mongoose.c`.tgz ; cd .. && tar --exclude \*.hg --exclude \*.svn --exclude \*.swp --exclude \*.nfs\* --exclude win32 -czf x mongoose && mv x mongoose/$$F
+	F=mongoose-`perl -lne '/define\s+MONGOOSE_VERSION\s+"(\S+)"/ and print $$1' mongoose.c`.tgz ; cd .. && tar --exclude \*.hg --exclude \*.svn --exclude \*.swp --exclude \*.nfs\* -czf x mongoose && mv x mongoose/$$F
 
 clean:
 	rm -rf *.o *.core $(PROG) *.obj $(PROG).txt *.dSYM *.tgz