Includes new API in medialib.php and core_media_renderer in outputrenderers.php.
Enable/disable settings moved from filter to systemwide appearance page.
Filter changed to use new API.

AMOS BEGIN
 MOV [flashanimation,filter_mediaplugin],[flashanimation,core_media]
 MOV [flashanimation_help,filter_mediaplugin],[flashanimation_desc,core_media]
 MOV [flashvideo,filter_mediaplugin],[flashvideo,core_media]
 MOV [flashvideo_help,filter_mediaplugin],[flashvideo_desc,core_media]
 MOV [html5audio,filter_mediaplugin],[html5audio,core_media]
 MOV [html5audio_help,filter_mediaplugin],[html5audio_desc,core_media]
 MOV [html5video,filter_mediaplugin],[html5video,core_media]
 MOV [html5video_help,filter_mediaplugin],[html5video_desc,core_media]
 MOV [mp3audio,filter_mediaplugin],[mp3audio,core_media]
 MOV [mp3audio_help,filter_mediaplugin],[mp3audio_desc,core_media]
 MOV [legacyquicktime,filter_mediaplugin],[legacyquicktime,core_media]
 MOV [legacyqui...