Tue May 15 20:13:24 2001  Jonathan Blandford  <jrb@redhat.com>

	* gtk/gtktreeviewcolumn.c: You can now set all sorts of properties
	in any order you wan, whether or not the column is added to the
	tree, or the tree is realized.  Yay!

	* gtk/gtktreeviewcolumn.c
	(gtk_tree_view_column_setup_sort_column_id_callback): handle
	sorting columns a lot saner

	* gtk/gtktreeviewcolumn.c (gtk_tree_view_column_set_reorderable):
	new function to actually set wether or not a column is
	reorderable.

	* gtk/gtktreeview.c (gtk_tree_view_unrealize): Only destroy things
	if we have 'em.

	* gtk/gtktreeviewcolumn.c (_gtk_tree_view_column_set_tree_view):
	Fix nasty bug where we were showing the button just before
	realizing it.  As a result, the parent window was
	tree_view->window instead of tree_view->priv->header_window.

	* gtk/gtktreeview.c (gtk_tree_view_set_reorderable): new property
	to let you easily reorder a list or tree.