2001-10-31  Carlos Perell Marn <carlos@gnome-db.org>

	* src/glade-placeholder.[ch] (glade_placeholder_remove_all):
	* src/glade-placeholder.[ch] (glade_placeholder_fill_empty): Added
	those new functions to remove/fill all widget's placeholders.
	* src/glade-gtk.c (glade_gtk_table_set_n_common):
	* src/glade-gtk.c (glade_gtk_box_set_size): Modified to remove all
	placeholders, modify the widget and then fill all the empty childs
	with placeholders using glade_placeholder_remove_all &&
	glade_placeholder_fill_empty.
	* src/glade-packing.[ch] (glade_packing_table_get_child_at): We need it
	as no static function for the glade_placeholder_fill_empty function