From f525373465aa81f64e48e43fecbf24fcde6cc13d Mon Sep 17 00:00:00 2001
From: "bernard.xiong@gmail.com" <bernard.xiong@gmail.com>
Date: Sun, 1 Apr 2012 07:12:58 +0000
Subject: [PATCH] remove empty directory.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2013 bbd45198-f89e-11dd-88c7-29a3b14d5316