test/java/awt/TrayIcon/PopupMenuLeakTest/PopupMenuLeakTest.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.

@@ -21,10 +21,11 @@
  * questions.
  */
 
 /*
  @test
+ @key headful
   @bug 8007220
   @summary Reference to the popup leaks after the TrayIcon is removed
   @author Petr Pchelko
   @run main/othervm -Xmx50m PopupMenuLeakTest
  */