Original commit message from CVS:
* configure.ac:
* gst/debug/Makefile.am:
* gst/debug/efence.c: (gst_efence_class_init), (gst_efence_init),
(gst_efence_chain), (gst_efence_buffer_alloc), (plugin_init),
(gst_fenced_buffer_finalize), (gst_fenced_buffer_copy),
(gst_fenced_buffer_alloc), (gst_fenced_buffer_class_init),
(gst_fenced_buffer_init), (gst_fenced_buffer_get_type):
Port to 0.9 and re-enable efence plugin.