* 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@