Git commits in Moodle 2.4.7 by Charles Severance

commit 4673a6a8fc65640b1c92e7661725a6eddf72f4b2
Author: Charles Severance <csev@umich.edu>
Date:   Sat, 19 Oct 2013 08:57:12 +0800
Tag:    v2.4.7

MDL-40531 mod_lti: Various 1.1/1.1.1 fixes.