Rebased ref, commits from common ancestor:
commit 8b72026a8655784be720e75b39ab56d107a90d32
Author: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
Date: Mon Nov 16 08:48:43 2009 +0900
Update prework howto
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>