Git commits in Moodle 2.5.3 by Michael Aherne

commit 04be3fce3e59c2c50a0ce21f5683cc3f3e69d209
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Thu, 24 Oct 2013 18:24:26 +0800
Tag:    v2.5.3

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

commit 98fa01e59f12a27f1e2afae0c890aa11b04e630b
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Thu, 19 Sep 2013 22:50:44 +0800
Tag:    v2.5.3

MDL-41900 events Log handler failures

commit dc4018e5c2914307e424a6527c00f94d5e1ff50d
Author: Michael Aherne <michael.aherne@strath.ac.uk>
Date:   Mon, 02 Sep 2013 17:22:40 +0800
Tag:    v2.5.3

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