Author: Tim Hunt
MDL-44118 new environment check are all quiz attempts upgraded.
In Moodle 2.1, there was a major DB upgrade relating to questions, and
it was possible to delay some of that upgrade. Now, those DB tables are
changing again, and the time has come to insist that all the updata has
been upgraded (or deleted).
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e4c20157c0ae900bb37f3018d1f95d02bafdf0d0
http://github.com/moodle/moodle/commit/e4c20157c0ae900bb37f3018d1f95d02bafdf0d0
+ 2.7 en [quizattemptsupgradedmessage,core_admin]