2011-11-30  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* src/wbc-gtk.c (wbc_gtk_create_status_area): allocate space for spaces
	surrounding "="
	* src/workbook-view.c (wb_view_darken_foreground_attributes_cb): new
	(wb_view_darken_foreground_attributes): new
	(wb_view_auto_expr_recalc): call wb_view_darken_foreground_attributes
	and add spaces around "="