Follow the recent addition of /usr/local/lib/pkgconfig and add

/usr/local/share/pkgconfig
ok sthen@

src/etc/mtree/4.4BSD.dist

@@ -1,4 +1,4 @@
-#	$OpenBSD: 4.4BSD.dist,v 1.259 2014/07/17 11:28:29 ajacoutot Exp $
+#	$OpenBSD: 4.4BSD.dist,v 1.260 2014/07/18 11:35:32 ajacoutot Exp $
 
 /set type=dir uname=root gname=wheel mode=0755
 
@@ -406,6 +406,8 @@ usr
                 uk_UA.KOI8-U
                 ..
             ..
+            pkgconfig
+            ..
             skel
             ..
         ..