Getting tired of debugging. Disabled all the unreffing of plugins and features,...

Getting tired of debugging.  Disabled all the unreffing of plugins and features, which fixes the segfaults, but of co...

Original commit message from CVS:
* check/gst/gstplugin.c:
* gst/gstelementfactory.c:
* gst/gstplugin.c:
* gst/gstpluginfeature.c:
* gst/gstregistry.c:
Getting tired of debugging.  Disabled all the unreffing of
plugins and features, which fixes the segfaults, but of
course leaks like crazy.  At least playbin works.