Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gst.c: (load_plugin_func), (scan_and_update_registry),
(init_post), (gst_deinit), (gst_update_registry):
* gst/gst.h:
API: add gst_update_registry() (#391296).
* tests/check/Makefile.am:
* tests/check/gst/gstregistry.c:
* tests/check/gst/.cvsignore:
Simple unit test for the above.