Original commit message from CVS:
* gst/udp/gstmultiudpsink.c: (gst_multiudpsink_class_init),
(gst_multiudpsink_setup_qos_dscp), (gst_multiudpsink_add_internal):
* gst/udp/gstmultiudpsink.h:
Add a fixme for the auto-multicast property.
Fix some confusing debug messages.
Disable setting a qos value by default.