Git commits in Moodle 2.3.3 by Tomasz Muras

commit d0bb10027b3c2c40c95387fbca5e952d6b976de6
Author: Tomasz Muras <nexor1984@gmail.com>
Date:   Mon, 24 Sep 2012 01:25:30 +0800
Tag:    v2.3.3

MDL-35547 Fetch more sub-categories with one SQL query.

commit 2ade1b52f9f44ca80aff60da5ec8b325b2f8fc6f
Author: Tomasz Muras <nexor1984@gmail.com>
Date:   Sat, 22 Sep 2012 04:01:06 +0800
Tag:    v2.3.3

MDL-35547 Detect loops in question categories.

commit 24d9d1811f8b91c43a5c604c1eb07eea7c499804
Author: Tomasz Muras <nexor1984@gmail.com>
Date:   Thu, 20 Sep 2012 23:48:14 +0800
Tag:    v2.3.3

MDL-35547 Detect question category pointing to itself as a parent.