Have encoders and demuxers selectively disabled for patents in
libffmpeg-full too. Assume same codecs covered as decoders and
muxers, respectively. Include vc1 in muxer's too.
Don't invoke --enable-nonfree in libffmpeg-full. It results in:
License: nonfree and unredistributable
Signed-off-by: Ian Leonard <antonlacon@gmail.com>