15667 libc regcomp/regexec show pathological behavior for "warn:|warning:"
Reviewed by: Robert Mustacchi <rm+illumos@fingolfin.org>
Approved by: Gordon Ross <gordon.w.ross@gmail.com>

15053 libc: unused parameter
Reviewed by: Gordon Ross <gordon.w.ross@gmail.com>
Reviewed by: Gerg&#337; Mih&#225;ly Doma <domag02@gmail.com>
Approved by: Dan McDonald <danmcd@mnx.io>

8355 need libc regex tests
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>

8354 sync regcomp(3C) with upstream
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>