Original commit message from CVS:
2003-03-29  Martin Schulze  <MHL.Schulze@t-online.de>

* gst/gstelementfactory.c: Add "g_free (dp->license)" in
gst_element_details_free().
* gst/gstevent.[ch]: Add function gst_event_get_type() to
support c++ language binding. Make macros gst_event_ref[_by_count]
return a GstEvent* instead of a GstData*.
* gst/gstbuffer.[ch]: Add functions gst_buffer[_pool]_get_type()
to support c++ language binding.