2010-07-15  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* dialog-workbook-attr.c (attr_dialog_init_cell_marker_page): new
	(page_info): add new page
	* workbook-attr.glade: add cell marker pane

2010-07-15  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* src/item-grid.c (draw_function_marker): new
	(item_grid_draw_region): call draw_function_marker when appropriate
	(item_grid_draw_merged_range): ditto
	* src/workbook-view.c (wb_view_set_attribute): handle new attribute
	(wb_view_set_property): ditto
	(workbook_view_class_init): ditto
	(workbook_view_new): ditto
	(wb_view_get_property): ditto
	* src/workbook-view.h (_WorkbookView): new field