gst/tcp/: 0.8 backporting.

gst/tcp/: 0.8 backporting.

Original commit message from CVS:
* gst/tcp/gstfdset.c: (gst_fdset_free):
* gst/tcp/gstmultifdsink.c: (gst_multifdsink_init),
(gst_multifdsink_add), (gst_multifdsink_remove),
(gst_multifdsink_clear), (gst_multifdsink_get_stats),
(gst_multifdsink_remove_client_link),
(gst_multifdsink_client_queue_data),
(gst_multifdsink_client_queue_caps),
(gst_multifdsink_client_queue_buffer),
(gst_multifdsink_queue_buffer), (gst_multifdsink_handle_clients),
(gst_multifdsink_stop):
* gst/tcp/gstmultifdsink.h:
0.8 backporting.

* sys/ximage/ximagesink.c: (gst_ximagesink_show_frame):
Also draw image when not from a pool.