Fix for 82804b1fa2
MpaDecFilter: more correct dwChannelMask for E-AC3 HDMI.
Contrib: Added option to show the git log instead of the hash to the rev2hash.sh script.
Remove custom code needed in the past in order to successfully link ffmpeg library.
update CFLAGS and ffmpeg/config.asm and ffmpeg/config.h
update ffmpeg (n0.8-19666-g98c4268)

Notes: broken atm because our custom files need to be updated too.
update h264_recov.c for the recent changes
Update our files for the recent FFmpeg changes.