Git commits in Moodle 2.4.7 by Michael Aherne

commit de4d45ce8e02a3d5e6188c6bb7ebbaf30b5bf294
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Thu, 24 Oct 2013 18:24:26 +0800
Tag:    v2.4.7

MDL-42517 testing Changed events test to use assertDebuggingCalled()

commit 4948ac2e0cbf9ee228fd31538a97efe270622d80
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Thu, 19 Sep 2013 22:50:44 +0800
Tag:    v2.4.7

MDL-41900 events Log handler failures

commit aadac9873b8896626e0db1ae00c67a8a82ab0c70
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Mon, 02 Sep 2013 17:22:40 +0800
Tag:    v2.4.7

MDL-41254 backup Raise time and memory limit in precheck.