Git commits in Moodle 2.6.5 by Colin Chambers

commit a9568d3d7f883a25631745347241da8c34bb2ff2
Author: Colin Chambers <c.chambers@open.ac.uk>
Date:   Tue, 19 Aug 2014 23:21:06 +0800
Tag:    v2.6.5

MDL-46895 qtype_calculated_find_formula_errors not defined causes Calculated question type test to fail