more docs inlined

more docs inlined

Original commit message from CVS:
* docs/gst/gstreamer-docs.sgml:
* docs/gst/tmpl/.cvsignore:
* docs/gst/tmpl/gstghostpad.sgml:
* docs/gst/tmpl/gstiterator.sgml:
* docs/gst/tmpl/gstmacros.sgml:
* docs/gst/tmpl/gstrealpad.sgml:
* docs/gst/tmpl/gstregistry.sgml:
* docs/gst/tmpl/gstregistrypool.sgml:
* docs/gst/tmpl/gststructure.sgml:
* docs/gst/tmpl/gstsystemclock.sgml:
* docs/gst/tmpl/gsttrace.sgml:
* gst/gstghostpad.c:
* gst/gstmacros.h:
* gst/gstmemchunk.c:
* gst/gstmemchunk.h:
* gst/gstqueue.c:
* gst/gstregistry.c:
* gst/gstregistrypool.c:
* gst/gststructure.c:
* gst/gstsystemclock.c:
more docs inlined