the gchar* parameters should be const (pointed out by both Marco Pesenti

the gchar* parameters should be const (pointed out by both Marco Pesenti

Sat Oct 11 15:47:03 2003  Kristian Rietveld  <kris@gtk.org>

	* gtk/gtkentrycompletion.[ch] (gtk_entry_completion_insert_action),
	(gtk_entry_completion_insert_action_text),
	(gtk_entry_completion_insert_action_markup): the gchar* parameters
	should be const (pointed out by both Marco Pesenti Gritti and
	Murray Cumming (#124356).