Add while loops (version 0.5.0)

* Add Parser Function Foxway ( {{#foxway: echo | 'hello' }} )
* Add variable $wgFoxway_max_execution_time
* Add variable $wgFoxway_max_execution_time_for_scope
* Add Hook 'ParserLimitReport'
* Add Array function key_exists (Alias of array_key_exists)
* Fix not enabled by default function strncasecmp()
* Fix boolean AND & OR operators

Change-Id: I426f3b2048205a920fd5e11596b09b4cc640f240
Merge "Add while loops (version 0.5.0)"