Author: Davo Smith
MDL-3782 qtype_multianswer: support 'multiple-answer' subquestions
http://git.moodle.org/gw?p=moodle.git;a=commit;h=946ab15c728664d58da7630d096b9b143e755467
http://github.com/moodle/moodle/commit/946ab15c728664d58da7630d096b9b143e755467
+ 3.2 en [layoutmultiple_horizontal,qtype_multianswer]
+ 3.2 en [layoutmultiple_vertical,qtype_multianswer]