Update ffmpeg
Update changelog
Allow selecting subtitles on a substring match in advanced mode

Fixes issue 453.

Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Move the subtitle track name check up to ensure its always checked
Workaround an issue with the Microsoft File Source (URL) and EOF handling

Fixes issue 463
Update installer and manifest for new ffmpeg library versions
Flag H.264 in MP4 without a CTTS atom as DTS-only timestamps
Small ffmpeg tweak
Update changelog for recent changes
Add support for transport protocol specific RTSP URL handlers

Fixes issue 480.

Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Default to x264 lossless bug workaround, since thats the only lossless files seen in the wild

Fixes issue 468
[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.