Original commit message from CVS:
* gst/qtdemux/qtdemux.c: (gst_qtdemux_add_stream), (qtdemux_parse),
(qtdemux_node_dump_foreach), (qtdemux_parse_trak),
(qtdemux_video_caps), (qtdemux_audio_caps):
Some more constification.
Fix some paletted data formats again.
Fix ulaw/alaw in qt.
Set correct caps for raw RGB.
Add support for yuv2, which is like Yuv2.
Add support for raw audio with the NONE fourcc, which is like raw.