Player: Rework dispatch_async usage
libvlc_media_player_set_media/stop are now asynchronous. The usage of dispatch_async is not needed anymore, except for the libvlc_media_player_release call. Indeed, this function can be blocking since it can wait for the input closing.
mediaplayer/stop-set/async/01 in 192 minutes and 50 seconds (queued for 62 minutes and 20 seconds)3 jobs for