- Added TAR archive loader.
   - Renamed the following functions-
      IFileArchive::getArchiveType to getType
      IFileSystem::registerFileArchive to addFileArchive
      IFileSystem::unregisterFileArchive to removeFileArchive
      IFileArchive::openFile to createAndOpenFile
   - New enum, E_FILE_ARCHIVE_TYPE. getType on IArchiveLoader and IFileArchive now both return this.
   - IFileSystem::addFileArchive takes a parameter to specify the archive type rather always using the file extension. IFileSystem::addZipFileArchive, addFolderFileArchive and addPakFileArchive now use this but these functions are now marked as deprecated. Users should now use addFileArchive instead.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2447 dfc29bdd-3216-0410-991c-e03cc46cb475