LucasArts SMUSH SANM video decoder

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
LucasArts SMUSH VIMA audio decoder

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
LucasArts SMUSH demuxer

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
fate: add tests for SANM and VIMA

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>