mov: Evaluate the movie display matrix

This matrix needs to be applied after all others have (currently only
display matrix from trak), but cannot be handled in movie box, since
streams are not allocated yet. So store it in main context, and apply
it when appropriate, that is after parsing the tkhd one.

Fate tests are updated accordingly.

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