Git commits in Moodle 1.9.12 by Rossiani Wijaya

commit 04b4210605caae2d46b124cfd36ff01cc68bceba
Author: Rossiani Wijaya <rwijaya@moodle.com>
Date:   Fri, 11 Mar 2011 12:14:29 +0800
Tag:    v1.9.12

MDL-19555: add NULL string test to format_test(). Credit goes to Matej Vela. Thanks

commit e1bde191709a5afd621839c91aeea3bd5add7e5c
Author: Rossiani Wijaya <rwijaya@moodle.com>
Date:   Thu, 10 Mar 2011 15:56:20 +0800
Tag:    v1.9.12

MDL-4633: remove 'required' rule for user's profile description