Author: David Mudrák
MDL-62309 tool_policy: Improve permission evaluation methods
Please refer to the unit tests for the specification of the expected
behaviour.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=ad5e2135c5d2ccd7f53a08fc0c66de66d431cfdf
http://github.com/moodle/moodle/commit/ad5e2135c5d2ccd7f53a08fc0c66de66d431cfdf
+ 3.6 en [errorpolicyversioncompulsory,tool_policy]