* Patch no longer follows symbolic links to input and output files. This
ensures that symbolic links created by git-style patches cannot cause
patch to write outside the working directory (CVE-2015-1196).
Remove dependencies:
* USE_GROFF: Acceptable whitespace differences only.
* USE_GMAKE: Not needed.
* TEST_DEPENDS=bash: Not required, portability fixes committed upstream.
* TEST_DEPENDS=gdiff: Not required, four tests are skipped.
ok sthen@
f0e92205f2