Git commits in Moodle 2.2.6 by Marina Glancy

commit 64346429fe848aa70d2aca14d69d45bd71ff56e2
Author: Marina Glancy <marina@moodle.com>
Date:   Thu, 13 Sep 2012 10:29:21 +0800
Tag:    v2.2.6

MDL-35001 removed cycle detection from convert_to_array because it causes error in data