2008-09-09 David De La Harpe Golden <david@harpegolden.net>

	* select.el: allow x-set-selection to take a buffer object
		     that is inspected on-demand to obtain selection data
		     from its region.

	* simple.el: lazy implementation of select-active-regions.

	* mouse.el:  fix time-ordering of deactivate-mark operations
	  	     in mouse drag tracking.
		     Avoid double insertion in mouse-yank-primary
		     when select-active-regions is on.