test/java/awt/SplashScreen/MultiResolutionSplash/MultiResolutionSplashTest.java

rev 14031 : 8159690: [TESTBUG] Mark headful tests with @key headful.

Backport of 14851:980da45565c8 from jdk9.  542/842 hunks applied directly from
the patch. 44 I resolved manually.  The remaining hunks are for filenames that
do not exist in jdk8u.

*** 1,7 ****
  /*
!  * Copyright (c) 2014, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2014, 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.
*** 38,47 ****
--- 38,48 ----
  import javax.imageio.ImageIO;
  import sun.java2d.SunGraphics2D;
  
  /**
   * @test
+  * @key headful
   * @bug 8043869 8075244 8078082
   * @author Alexander Scherbatiy
   * @summary [macosx] java -splash does not honor 2x hi dpi notation for retina
   * support
   * @run main MultiResolutionSplashTest GENERATE_IMAGES