ext/ogg/gstoggmux.c: eos/bos debugging

ext/ogg/gstoggmux.c: eos/bos debugging

Original commit message from CVS:

* ext/ogg/gstoggmux.c:
eos/bos debugging
* gst/tcp/gstmultifdsink.c:
* gst/tcp/gstmultifdsink.h:
* gst/tcp/gsttcp.c:
* gst/tcp/gsttcp.h:
* gst/tcp/gsttcpclientsink.c:
* gst/tcp/gsttcpclientsrc.c:
* gst/tcp/gsttcpserversink.c:
* gst/tcp/gsttcpserversrc.c:
improve reusability of elements after state changes and errors
make multifdsink throw away streamheaders when receiving new ones