Revert "actually disable C4995 and C4996 for udf.cpp"

This reverts commit 03ca3eff5fccbfe6bfc1583789d4fe91af8b1900.
build.bat, mpc-hc_setup.iss : add ICL13 support
update ffmpeg (n0.8-18091-g96d1b7f)
Work around a libavresample crash
Switch to av_assert2.  Someone should check why we hit this.
h264.c: remove custom code.  This caused the decoder to show a blank screen when playing back a h264 file and the AR changed.
clean up project references
ffmpeg: remove custom code