2011-11-04 Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* src/wbc-gtk.c (cb_auto_expr_cell_changed): new
	(cb_auto_expr_changed): set new auto-expr properties
	(cb_select_auto_expr): create new auto-expression menu item
	* src/workbook-view.c (wb_view_auto_expr_recalc): handle possible
	cell formula
	(wb_view_auto_expr_cell): new
	(wb_view_auto_expr_sheet): new
	(wb_view_set_property): handle new properties
	(wb_view_get_property): handle new properties
	(workbook_view_class_init): install new properties
	* src/workbook-view.h (_WorkbookView): add new fields