Author: Andrew Nicols
MDL-60432 auth_cas: Update with PR changes
http://git.moodle.org/gw?p=moodle.git;a=commit;h=3b017210d3063e240cbf71f29a2fea1d5d9fd07b
http://github.com/moodle/moodle/commit/3b017210d3063e240cbf71f29a2fea1d5d9fd07b
+ 3.7 en [auth_cas_auth_service,auth_cas]