h264 encoder support for Allwinner H3 CPU

These are modified sources of the port of FFmpeg for Cedrus originally located here: https://github.com/stulluk/FFmpeg-Cedrus To use these sources checkout original sources and replace file FFmpeg-root-dir/libavcodec/cedrus264.c with one from this repository, replace folder FFmpeg-root-dir/libavcodec/arm/sunxi with folder from this repository.

./configure --prefix=/usr --enable-nonfree --enable-gpl --enable-version3 --enable-vdpau --enable-libx264 --enable-libmp3lame --enable-libpulse --enable-libv4l2

and then, make && sudo make install