MPCVideoDec: fixed saving option "Set DXVA for SD (H.264)", cosmetics.
Fix: The filename could be wrong when saving a screenshot or thumbnails.

Filenames containing a dot but no extension were incorrectly modified.

This commit fixes ticket #2855.
Revert "actually disable C4995 and C4996 for udf.cpp"

This reverts commit 03ca3eff5fccbfe6bfc1583789d4fe91af8b1900.
build.bat, mpc-hc_setup.iss : add ICL13 support
update ffmpeg (n0.8-18110-g0c6b040)
Work around a libavresample crash
h264.c: remove custom code.  This caused the decoder to show a blank screen when playing back a h264 file in software mode and the AR changed.
clean up project references
ffmpeg: remove custom code