Note that even develop-olympus has a number of uses of _DIR_.
Cache test writes to a temporary location deep in the source tree
Note that PHPBB3-10013 alters one _DIR_ into a _FILE_.
Something got messed up in #52
Need to update the leftovers from develop as well.
Ah sorry, created an other pull request. I wasn't sure on how to handle the changes that also get applied in: http://tracker.phpbb.com/browse/PHPBB3-10013. So I've included them here as well.
Added the other Ascraeus tests.
See failed Bamboo build for details.
First fix at: https://github.com/phpbb/phpbb3/pull/53