removed AgaviConfigCache::clearCache() it used to be private, is not called anywhere and redundant anyways. Go, dead code, begone!
added a testcase for adding an unreadable config handlers file
- added an AgaviTestingConfigCache to allow access to some internal properties
- added a TestCase for adding an existant config handlers file
added another assertion to testAddConfigHandlersFile()
removed typo...
added stub testcase for setupHandlers