Handle key bindings to expand and collapse rows.

Handle key bindings to expand and collapse rows.

Wed Jun  6 20:01:38 2001  Jonathan Blandford  <jrb@redhat.com>

	* gtk/gtktreeview.c
	(gtk_tree_view_real_expand_collapse_cursor_row): Handle key
	bindings to expand and collapse rows.
	(gtk_tree_view_real_select_cursor_parent): New key binding.
	(gtk_tree_view_real_toggle_cursor_row): New key binding.

	* gtk/gtkmarshal.list: new
	marshaller. (VOID__BOOLEAN_BOOLEAN_BOOLEAN)