Don't use GTK_WIDGET_*SET_FLAGS (wid, GTK_REALIZED)

Use new API instead: gtk_widget_set_realized ()

https://bugzilla.gnome.org/show_bug.cgi?id=69872

examples/gtkdial/gtkdial.c

@@ -214,7 +214,7 @@ gtk_dial_realize (GtkWidget *widget)
   g_return_if_fail (widget != NULL);
   g_return_if_fail (GTK_IS_DIAL (widget));
 
-  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+  gtk_widget_set_realized (widget, TRUE);
   dial = GTK_DIAL (widget);
 
   attributes.x = widget->allocation.x;