modules/javafx.graphics/src/main/java/com/sun/glass/ui/gtk/GtkApplication.java

rev 10880 : 8198654: Switch FX's default GTK version to 3
Reviewed-by:

*** 1,7 ****
  /*
!  * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 144,154 ****
  
      GtkApplication() {
  
          final int gtkVersion = forcedGtkVersion == 0 ?
              AccessController.doPrivileged((PrivilegedAction<Integer>) () -> {
!                 String v = System.getProperty("jdk.gtk.version","2");
                  int ret = 0;
                  if ("3".equals(v) || v.startsWith("3.")) {
                      ret = 3;
                  } else if ("2".equals(v) || v.startsWith("2.")) {
                      ret = 2;
--- 144,154 ----
  
      GtkApplication() {
  
          final int gtkVersion = forcedGtkVersion == 0 ?
              AccessController.doPrivileged((PrivilegedAction<Integer>) () -> {
!                 String v = System.getProperty("jdk.gtk.version","3");
                  int ret = 0;
                  if ("3".equals(v) || v.startsWith("3.")) {
                      ret = 3;
                  } else if ("2".equals(v) || v.startsWith("2.")) {
                      ret = 2;