Original commit message from CVS:
cothreads.c: added a comment on one of the tests
gstbin.h: added the GST_BIN_SELF_SCHEDULABLE flag
gstelement.c: cleaned up the _change_state function a little
gstobject.c: improved the refcounting DEBUGs
gstpad.c: moved the connected signal to after capsnego,
added the caps_nego_failed signal
gstpad.h: added the caps_nego_failed signal funcptr
gstscheduler.c: added the GST_BIN_SELF_SCHEDULABLE exception
gsttypefind.c: added check code around signal_emit to deal with the case
where the signal's handler shuts down the element
gstautoplugcache.c: added the first_buffer signal and caps_proxy arg
gstautoplugger.c: significant rework, it functions quite nicely actually