Allow seeking in segments not downloaded yet. Since the exact file size
for future segments is unknown seeking will be inaccurate.

Start playback right after successfull downloading of the first segment. Switch to a higher bandwidth
later on. By the time peeking and first segment have been played the next segment is available.
(cherry picked from commit 82512718)

Conflicts:

	modules/stream_filter/httplive.c

If block_Realloc() fails in the function AccessDownload() then resolving
segment->data->i_buffer results in a segmentation error. Instead of continuing
when block_Realloc() has failed, just cleanup and leave the function.
(cherry picked from commit 3e8e9287ae7d138da73b3794de700f3c1efb22fb)

HTTP Live Streams are number from 0 in vlc_array_t. The condition in Download()
excluded 0 as valid stream. The first element in the array is at index 0, so consider
this to be valid.

IV attribute of tag #EXT-X-KEY was parsed for any version of the protocol.
However chapter "7. Protocol version compatibility" lists the IV tag being
protocol version 2 or higher. This patch restricts the IV attribute to version
2 or higher of the protocol.

Rework on HTTP Live Streaming is being merged in branch 'hls', this
brings upstream development on par.

Conflicts:
	modules/stream_filter/httplive.c

Properly pass duration to the correct hls_stream_t instance currently in use.

Take relative URI into account. This patch relies on protocol (s->psz_access)  information being
included in the stream_t * in addition to psz_path.

In addition to p_access->psz_location also add p_access->psz_access to the contructed
stream_t *. It will allow a stream_filter to determine the protocol used in case it was
constructed with an access input.

Cleanup

Remove debug code no longer needed.

Remove unused include files.

X264 requires X264_BUILD version >= 83 now and fix a few place
where X264_BUILD >= 86 are required.

Support HTTP Live Streaming as described in the IETF draft standard:
 * http://tools.ietf.org/html/draft-pantos-http-live-streaming-04#page-8
and Apple its description:
 * http://developer.apple.com/library/ios/#documentation/networkinginternet/conceptual/streamingmediaguide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40008332-CH1-DontLinkElementID_29

Not implemented (yet):
- Encrypted streams (EXT-X-KEY)
- playlist reloading for live streams

Yes, this code is weird, but well

If the version header is there, the main one should be too.

works around the lack of a recent enough libebml/libmatroska in Debian

There was a race between Peek() and hls_Thread() when using a meta playlist file.
In Prefetch() the Download() detected a better bandwidth setting and switched to it.
However the segment just downloaded was not available in the other quality. Through
checking in Prefetch() if it was switched and then downloading the needed segment
the race if prohibited.

Allow using of username/password in URI for downloading segments or playlist files.

Use HTTP access input to download:
- playlists from meta index file
- playlist files

the version number hasn't been updated