From 0c567e922fc9a2118ff21c56e997e4abee70fc4d Mon Sep 17 00:00:00 2001
From: "bernard.xiong" <bernard.xiong@gmail.com>
Date: Mon, 19 Apr 2010 01:46:17 +0000
Subject: [PATCH] add external directory

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@644 bbd45198-f89e-11dd-88c7-29a3b14d5316