FreeBSD patch

This is the patch(1) utility, taken from FreeBSD and made portable.

The current version matches the FreeBSD 13 release.

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
tests		tests
.gitignore		.gitignore
COPYING.md		COPYING.md
Makefile		Makefile
README.md		README.md
backupfile.c		backupfile.c
backupfile.h		backupfile.h
common.h		common.h
inp.c		inp.c
inp.h		inp.h
mkpath.c		mkpath.c
patch.1		patch.1
patch.c		patch.c
pathnames.h		pathnames.h
pch.c		pch.c
pch.h		pch.h
strtonum.c		strtonum.c
util.c		util.c
util.h		util.h

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