Git commits in Moodle 2.3.1 by Kanika Goyal

commit d9b9bfd2889452b0a07ce3bf27e3e79c4b83d0fc
Author: Kanika Goyal <kanikagoyal999@gmail.com>
Date:   Sat, 31 Mar 2012 21:21:16 +0800
Tag:    v2.3.1

MDL-31203 mod_forum: advanced search posts must be newer older than date, reverts date