Fix image size reported in initial media types
Update ffmpeg for OGM seeking fix
Opus pre-skip fix
mov default flag fix
Fix Forced Subtitle stream in files without audio.
Make PGS selection more lenient when no stream matches the audio language.
Update qsdecoder for debug build fix on x64
Change "No subtitles" pin to use a basic text-only type
Update version and changelog
Update copyright year to 2014
Update developer_info
[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.