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

Playback of live streams requires at least 3 segments of TARGETDURATION. Otherwise stalling
in playback may occur.

If #EXT-X-ALLOW-CACHE is set to NO, then it is not allowed to cache the files
after playback. They must be released.

Cleanup and reworks.

Implement an attribute parsing function that does not depend on fixed position of attributes in a HTTP live streaming m3u8 file.
The function returns a copy of the attributes value. Do not forget to free the copy otherwise it will result in a memory leak.

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)
- HTTPS (maybe use access_t in stream_filter)

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

This also fixes the X11 la file issue on machines running 10.6 and later.

Maybe littlebit hackis implementation and core could be better place to
implement this.

This fixes the video output on PowerPC based Macs. A proper fix would be welcome.

Forward-port of [c036a996]

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

This reverts commit e209d40a.
This is not needed anymore because of the previous commit.

This reverts commit 4bf41957.

This is not needed. readdir() uses one dirent buffer per DIR pointer,
not per process. In other words, as long as a given DIR pointer is used
in a single thread, readdir() is thread-safe.

Most subtitles codecs are still in m/codec/, like dvbsub, svcdsub, cvdsub, libass, spudec.
This makes it consistent.

This also removes an extra folder to compile...

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Check return value of GetPackedYuvOffsets().

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Close #3774

XP is too old. Deal with it. Will ease support
Close #3727