From 08c347079ca1fe4f4d9585dbc78c320711a4df75 Mon Sep 17 00:00:00 2001
From: John Baldwin <jhb@FreeBSD.org>
Date: Mon, 17 Aug 2009 14:42:41 +0000
Subject: [PATCH] MFC: Purge mergeinfo in sys/ that is either empty or a subset
 of the parent mergeinfo on sys/ itself.

Approved by:	re (mergeinfo blanket)