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=777017e7845a6aaae72eed9fe6a34d20e423bcbb
http://github.com/moodle/moodle/commit/777017e7845a6aaae72eed9fe6a34d20e423bcbb
+ 2.5 en [quizattemptsupgradedmessage,core_admin]