Import http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/lib/libc/string/fls.c
Header fixes
Import http://www.openbsd.org/cgi-bin/cvsweb/~checkout~/src/lib/libc/string/memrchr.c
Sync strcat.c with upstream OpenBSD
Import http://www.openbsd.org/cgi-bin/cvsweb/~checkout~/src/lib/libc/string/timingsafe_bcmp.c
Header update
Import http://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/lib/libc/string/ffsl.c
Header update for ffsl (DFBSD)