I just want to remind that patch is level 8 and there aretwo versions now:
u8 which uses Larry Wall's interactive configure and g8 uses
non-interactive gnu configure. g8 also supports long name options;
otherwise they are identical.
What about trying patch-2.0g8 from ftp.eu.net in gnu directory.
GNU version will configure itself easily.
You can also obtain patch from email@example.com