Log Message:
Update "patch" package to version 2.5.9. Changes since version 2.5.4:
- patch -D now outputs preprocessor lines without comments, as required
  by POSIX 1003.1-2001.
- File names in context patches may now contain spaces, so long
  as the context patch headers use a tab to separate the file name
  from the time stamp.
- Perforce is now supported.
- Patch lines beginning with "#" are comments and are ignored.
- The bug reporting address is now <bug-patch@gnu.org>.
- bug fixes

This update includes the fix for the directory traversal vulnerability
reported in CVE-2010-4651.