2001-08-28  Chema Celorio  <chema@celorio.com>

	* src/glade-placeholder.c (glade_placeholder_add_with_result): rewrite
	(glade_placeholder_is): impl.

	* src/glade-widget-class.c (glade_widget_class_is): impl.

	* src/glade-placeholder.c (glade_placeholder_new): set the parent
	as a data (not user) member. Also set True so that we can use :

	* src/glade-packing.c (glade_packing_table_get_child_at): implement.
	(glade_packing_table_child_has_span): impl.
	(glade_packing_table_cell_common_set): impl.
	(glade_packing_table_cell_x_set): impl.
	(glade_packing_table_cell_y_set): impl.
	(glade_packing_table_span_common_set): impl.
	(glade_packing_table_span_x_set): impl.
	(glade_packing_table_span_y_set): impl.

	* src/glade-gtk.c (glade_gtk_table_get_n_rows): disable
	(glade_gtk_table_get_n_columns): ditto
	(glade_gtk_table_set_n_common): use for both x & y. Add
	support for childs that have spans.
	(glade_gtk_table_set_n_rows): call _n_common
	(glade_gtk_table_set_n_columns): call _n_common
	(glade_gtk_table_post_create): implement