Author: Simey Lameze
MDL-49114 environment: add slasharguments warning message
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1bd4b9fcb443a086033bc328a2424f2a42ab83e1
http://github.com/moodle/moodle/commit/1bd4b9fcb443a086033bc328a2424f2a42ab83e1
+ 2.9 en [slashargumentswarning,core_admin]