MpaDecFilter->Mixer: fixed using normalize matrix coefficient.
build.bat, mpc-hc_setup.iss : add ICL13 support
Cppcheck fixes (WIP)
AudioParser.h: apply astyle
comment unused function
astyle missed this
update ffmpeg (n0.8-19174-g8d1dd5b)

Notes: broken atm because our custom files need to be updated too

* libavcodec/h264_dxva.c
* libavcodec/h264_recov.c
* libavcodec/vc1_dxva.c