Initial stab at getting the focus code to work.

Initial stab at getting the focus code to work.

Fri Jun  1 18:54:47 2001  Jonathan Blandford  <jrb@redhat.com>

	* gtk/gtktreeview.c: (gtk_tree_view_focus): Initial stab at
	getting the focus code to work.
	(gtk_tree_view_class_init): Add a bunch of keybindings.

	* gtk/gtktreeviewcolumn.c
	(gtk_tree_view_column_set_cell_data_func):
	s/GtkCellDataFunc/GtkTreeCellDataFunc.
	(_gtk_tree_view_column_set_tree_view): Use "notify::model" instead
	of "properties_changed" to help justify the death of the latter
	signal. (-:

	* tests/testtreefocus.c (main): Let some columns be focussable to
	test focus better.