Author: Safat
MDL-76406 core: Add environment check for versions not supporting 8.2
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c2e0c4a533edbf2102e448f851744a81bcbb012f
http://github.com/moodle/moodle/commit/c2e0c4a533edbf2102e448f851744a81bcbb012f
+ 4.0 en [unsupportedphpversion82,core_admin]