* gtkutil.c (create_dialog): Don't use gtk_dialog_get_action_area on
Gt+ >= 3.12, or gtk_misc_set_alignment on Gtk+ >= 3.14.
(make_widget_for_menu_item): Don't use gtk_misc_set_alignment on
Gtk+ >= 3.14 (Bug#18674).
(update_frame_tool_bar): Don't use  gtk_misc_set_padding on
Gtk+ >= 3.14 (Bug#18674).