K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2020-12-30T01:14:42.204472Z
K 7
svn:log
V 456
bsdgrep: switch to libregex for GNU_GREP_COMPAT

libregex is incomplete, but it's a bit less buggy than the in-base
libgnuregex and mostly OK.

While here, rename -DIWTH_GNU -> -DWITH_GNU_COMPAT; the option implies
that we're compatible with the GNU counterpart, not that we're including GNU
anything.

(cherry picked from commit cab7d341dcd98138443bbdb51649f966093a3a84)

Git Hash:   cadd3b8fcb416b8474b91f237671b49bc7b834e6
Git Author: kevans@FreeBSD.org
END