gst/qtdemux/: Add cover and alternative copyright tag, and enhance some existing ones by marking them as container at...

Original commit message from CVS:
* gst/qtdemux/qtdemux.c: (qtdemux_tag_add_tmpo),
(qtdemux_tag_add_covr), (qtdemux_parse_udta):
* gst/qtdemux/qtdemux_fourcc.h:
* gst/qtdemux/qtdemux_types.c:
Add cover and alternative copyright tag, and enhance some existing
ones by marking them as container atoms.
4 files changed