Original commit message from CVS:
2005-11-05 Julien MOUTTE <julien@moutte.net>
* ext/directfb/dfbvideosink.c: (gst_dfbvideosink_enum_layers),
(gst_dfbvideosink_setup),
(gst_dfbvideosink_can_blit_from_format),
(gst_dfbvideosink_getcaps): Make acceleration detection work,
better, add safety checks and ARGB support for cards that
support it.