Make fped build with older versions of Gtl.

- gui_util.c: gtk_widget_get_snapshot is only available since Gtk version 2.14.
  Omit debug_save_widget if using an older version of Gtk. (Reported by Igor
  Almeida.)



git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5853 99fdad57-331a-0410-800a-d7fa5415bdb3

gui_util.c

@@ -358,6 +358,8 @@ void debug_save_pixbuf(GdkPixbuf *buf)
  * the widget being dumped.
  */
 
+#if GTK_CHECK_VERSION(2, 14, 0)
+
 void debug_save_widget(GtkWidget *widget)
 {
 	GdkPixmap *pixmap;
@@ -373,6 +375,8 @@ void debug_save_widget(GtkWidget *widget)
 	g_object_unref(pixbuf);
 }
 
+#endif /* GTK_CHECK_VERSION(2, 14, 0) */
+
 
 /* ----- kill the content of a container ----------------------------------- */