gst-plugins-good/gst/udp/: Allow udpsrc and dynudpsink to take a sockfd as a parameter. For udpsrc, overrides the por...

Original commit message from CVS:
2005-01-07  Philippe Khalaf  <philippe.kalaf@collabora.co.uk>

* gst-plugins-good/gst/udp/gstdynudpsink.c:
* gst-plugins-good/gst/udp/gstudpsrc.c:
Allow udpsrc and dynudpsink to take a sockfd as a parameter. For udpsrc,
overrides the port or multicast parameters. Fixes bugs #323021.