test/javax/swing/plaf/gtk/crash/RenderBadPictureCrash.java

rev 14031 : 8160974: [TESTBUG] Mark more headful tests with @key headful.

This is a backport of fe58d505fffd from jdk9. 228/596 hunks apply without
modifications. 16 hunks required manual rework. The remainder were for files
not present in jdk8u.

*** 21,30 ****
--- 21,31 ----
   * questions.
   */
  
  /*
   @test
+  @key headful
   @bug 8056151
   @summary Switching to GTK L&F on-the-fly leads to X Window System error RenderBadPicture
   @run main/othervm -Dswing.defaultlaf=javax.swing.plaf.metal.MetalLookAndFeel -Dsun.java2d.xrender=T RenderBadPictureCrash
   */