Implement IBitRateInfo

Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Update ffmpeg for h264 dxva crash fix
dxva2: prefer the VC1_D2010 decoder over the older variant
Tiny ffmpeg fix
Use proper format type for native mpeg4 in mkv
Update libbluray to 0.5.0
[MPC-HC] Use our own ffmpeg clone repository.

WARNING: This should be the first custom commit in our fork and its title should not be modified.
[MPC-HC] LAV Splitter: Exhibits MKV attachments through IDSMResourceBag interface.
[MPC-HC] Tray icon: Add an optional custom callback for "show property page" events.
[MPC-HC] Fix the include directories for FFmpeg's out-of-source-tree build.
[MPC-HC] Version number: Add a "git describe based" commit number to identify the vanilla LAV Filters we are based on.

This way if we distribute LAV Filters version X.Y.Z.N, it means that our custom build is based on:
 - the stable version X.Y.Z,
 - with N official patches (which will be part of next official LAV Filters build),
 - and some custom non-official patches which are here to improve the integration in MPC-HC.