Add a wrapper for libutvideo's decoder.

This supports decoding the following FOURCCs:
    ULY0 - 4:2:0 YCbCr
    ULY2 - 4:2:2 YCbCr
    ULRG - RGB
    ULRA - RGBA

Also, bump version.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>