Author: Tony Levi
MDL-42192 accesslib: Cache capabilities list
With thanks to Andrew Nicols <andrew@nicols.co.uk> for some ammendments.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=aa7017432a81b048705192d8a2ffe70c2890e4de
http://github.com/moodle/moodle/commit/aa7017432a81b048705192d8a2ffe70c2890e4de
+ 3.0 en [cachedef_capabilities,core_cache]