* app/tools/gimprectangleoptions.[ch]
	* app/tools/gimprectangleselecttool.c
	* app/tools/gimprectangletool.c
	* app/tools/gimpselectionoptions.c: move "auto-shrink"
	and "shrink-merged" from selection options to
	rectangle options where they belong; now shown
	for crop tool as well as rect select.