Update QS Decoder
Update ffmpeg
Avoid crashes on incomplete media types.

Fixes issue 334.
Update ffmpeg build scripts for dxva2 configure changes
Replace manual MPEG checks with checks against AVFMT_TS_DISCONT
Update ffmpeg
Detect timestamp disconts at the start of the stream as well.
Sent a discontinuity when doing a timestamp correction
Support parsing OGM locale codes in the format "English[eng]"
Use alloc_context3, the others are deprecated
Update ffmpeg
Convert LAVFI/YADIF interface to AVFrames
Update avformat/avcodec dll versions
avcodec: convert to refcounted frames
Use refcounted frames for yadif when possible.

This avoids an extra memory copy and increases filtering performance by up
to 10%.
Update ffmpeg for h264 dxva issue
Update qsdecoder for dvb fix
Update ffmpeg for AAC fix