2014-10-07 Fred Gleason <fredg@paravelsystems.com>
	* Added a 'GPIO_EVENTS' table to the database.
	* Incremented the database version to 240.
	* Implemented GPIO event logging in 'ripcd/local_macros.cpp' and
	'ripcd/ripcd.h'.
	* Added an 'Events Log' area to RDGpiMon(1) in
	'utils/rdgpimon/rdgpimon.cpp' and 'utils/rdgpimon/rdgpimon.h'.
	* Added code in rdmaint(1) to purge logged GPIO events in
	'utils/rdmaint/rdmaint.cpp' and 'utils/rdmaint/rdmaint.h'.