Some more robot integration.

	* event/lib/event.h, event/lib/event.c: Add some
	event_notification creation functions that get used in
	event-sched.

	* event/sched/event-sched.c, event/sched/rpc.h,
	event/sched/rpc.cc: Sync the start of event time with the
	robots reaching their initial positions.  This is done by
	creating a master event-sequence that takes care of sending
	the SETDEST events and then starting the Simulator timeline.

	* mote/tbuisp.in: Use node_reboot instead of ssh'ing in.

	* robots/GNUmakefile.in: Don't build tbsetdest if ulsshxmlrpcpp is
	not available.

	* robots/emc/loclistener.in: Clear the destination values for a
	node when it reaches its destination.

	* robots/primotion/garcia-pilot.cc,
	robots/primotion/pilotClient.cc: Some cleanup and debugging.

	* robots/primotion/wheelManager.cc: Check the rear sensors for
	obstructions and then decide which way to pivot.

	* robots/rmcd/pilotConnection.h, robots/rmcd/pilotConnection.c,
	robots/rmcd/rclip.h: Even more tweaking.

	* rob...