utils: PersistentObject: store fullfn. fixes some exit behavior where appinfo.userdir is already None
utils: PersistentObject: store fullfn. fixes some exit behavior where appinfo.userdir is already None

kingsj/music-player,albertz/music-player,kingsj/music-player,kingsj/music-player,albertz/music-player,albertz/music-player,albertz/music-player,kingsj/music-player,kingsj/music-player,albertz/music-player,albertz/music-player