test/java/awt/LightweightDispatcher/LWDispatcherMemoryLeakTest.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.

*** 36,45 ****
--- 36,46 ----
  import javax.swing.SwingUtilities;
  import test.java.awt.regtesthelpers.Util;
  
  /*
   @test
+  @key headful
   @bug 7079254
   @summary Toolkit eventListener leaks memory
   @library ../regtesthelpers
   @build Util
   @compile LWDispatcherMemoryLeakTest.java