joomla/joomla-platform — pull request #1228 by realityking (2012-05-30 11:24:45+00:00)
Title: Reduce dependency on JFolder and JObject

The cache package still depends on filesystem, however JCache itself doesn't.
JLanguage only depends on the string package and JXMLElement after this.
The session package shouldn't depend on the filesystem package anymore.

Note: B/C issue created by removing JLanguage::parseXMLLanguageFiles(). It's simply not needed anymore due to the RecusiveDirectoryIterator in JLanguage::parseLanguageFiles()