Fri Nov  7 22:55:49 2003  Matthias Clasen  <maclas@gmx.de>

	* gtk/gtkwindow.c (gtk_window_set_role):
	* gtk/gtkwindow.c (gtk_window_set_title):
	* gtk/gtkwidget.c (gtk_widget_set_name):
	* gtk/gtktreeviewcolumn.c (gtk_tree_view_column_set_title):
	* gtk/gtkbutton.c (gtk_button_set_label): Make string setters
	safe for self-assignment.  (#122745, Soeren Sandmann)