Properly handle model changes in GtkTreeSelection: (#322569, Milosz

Properly handle model changes in GtkTreeSelection: (#322569, Milosz

2005-11-29  Matthias Clasen  <mclasen@redhat.com>

	Properly handle model changes in GtkTreeSelection: (#322569,
	Milosz Derezynski)

	* gtk/gtktreeselection.c (gtk_tree_selection_selected_foreach):
	Get a reference to the model, and stop the iteration if the model
	of the treeview is changed on the way.

	* gtk/gtktreeprivate.h:
	* gtk/gtktreeselection.c (_gtk_tree_selection_emit_changed): New
	private function to emit the GtkTreeSelection::changed signal.

	* gtk/gtktreeview.c (gtk_tree_view_set_model): Call
	_gtk_tree_selection_emit_changed() when the model changes.