Git commits in Moodle 2.5.x by Hugh Davenport

commit 9a2b5e0b4f28aac950934d6e1c9fa1aee3574f5b
Author: Hugh Davenport <hugh@catalyst.net.nz>
Date:   Thu, 28 Mar 2013 09:32:48 +0800
Tag:    v2.5.0-rc1

MDL-35852 Add config option to prevent changes to configexecutable settings