Original commit message from CVS:
2005-09-20  Andy Wingo  <wingo@pobox.com>

* gst/gstelementfactory.c (gst_element_factory_create): Avoid
eating the caller's refcount.

* gst/gstobject.h (GST_OBJECT_REFCOUNT)
(GST_OBJECT_REFCOUNT_VALUE): Conditionally fondle the right
refcount.

* gst/gstconfig.h.in (GST_HAVE_GLIB_2_8):
* configure.ac (GST_HAVE_GLIB_2_8_DEFINE): Make the availability
of GLib 2.8 public, so we can know which refcount to check in
tests.

* gst/gstobject.c: Use the GST_HAVE_GLIB_2_8 define.
(gst_object_init): Only set the gst refcount if we're going ahead
with the refcount hack.