Add GTK_SELECTION_NONE enum, #61695

Add GTK_SELECTION_NONE enum, #61695

Wed Oct 31 14:45:08 2001  Jonathan Blandford  <jrb@redhat.com>

	* gtk/gtkenums.h (enum): Add GTK_SELECTION_NONE enum, #61695

	* gtk/gtktreeselection.c (gtk_tree_selection_set_mode): Handle new
	GTK_SELECTION_NONE enum.
	(_gtk_tree_selection_internal_select_node): ditto

	* gtk/gtkcellrenderer.h (struct _GtkCellRendererClass): add
	constness.

	* gtk/gtkcellrenderertoggle.c: more yummy constness.

	* gtk/gtkclist.c (gtk_clist_set_selection_mode): g_return_if_fail
	if mode == GTK_SELECTION_NONE