Added menu button Y
Added generic message buffer and open_compressed flag to menu_driver
Added toggle button to open zip files in load content and detect core
File.c now autoextracts in case of need_fullpath
Zipfiles open or run half finished
Failsafe in case extraction dir is wrong
Always interpret files as carchives in case of detect_core_list to allow browsing them.
Choosing whether to open or load a zip file in detect core should work now
Removed MENU_ACTION_Y, small bugfix with selections in zip select
Included direct to file extraction into 7z and zip format readers. They are used in case of need_fullpath and archive usage
Zip UI cleanup before pull request
Made deferred path correct in case of a compressed file
Merge remote-tracking branch 'upstream/master' into zip_ui

Conflicts:
	retroarch.c (defer_core was moved and modified by me)
Merge pull request #1048 from timostrunk/zip_ui

Zip ui