Merge branch 'jn/no-g-plus-s-on-bsd'

* jn/no-g-plus-s-on-bsd:
  Makefile: do not set setgid bit on directories on GNU/kFreeBSD

Makefile

@@ -822,6 +822,7 @@ ifeq ($(uname_S),GNU/kFreeBSD)
 	NO_STRLCPY = YesPlease
 	NO_MKSTEMPS = YesPlease
 	HAVE_PATHS_H = YesPlease
+	DIR_HAS_BSD_GROUP_SEMANTICS = YesPlease
 endif
 ifeq ($(uname_S),UnixWare)
 	CC = cc