#ENDLIST needs to be added to completed recordings

[bquandt]

While recording, the index.m3u8 is left open (ie no endlist), however at the end of a recording, ie when stop is pressed, the m3u8 needs to be ended, ie with a #ENDLIST tag.

This is necessary for proper non-streaming playback under iOS, namely, it's necessary so that the right controls are displayed to the user (fwd, bwd, play), as well as proper time positioning.

[floxxy]

Also, #EXT-X-MEDIA-SEQUENCE tags should appear only in live streaming playlists.