This is a patch to the original CORBA-based atk-bridge that causes it to
log events to standard error.  Events are counted, and an idle handler
is added when an event is received that logs the number of events that
have occurred since it was last called.  This allows one to analyze
the number of events that a program generated along with the amount of
consolidation that could theoretically be done by deferring the sending
to an idle handler.

Lines starting with "semi" track the number of events that
could be combined if certain types of events break the flow
(currently all events other than object:children-changed,
object:property-change:accessible-praent, and object:state-changed).