test/javax/swing/JPopupMenu/4966112/bug4966112.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 4966112
   * @summary Some Composite components does not show the Context Popup.
   * @library ../../regtesthelpers
   * @build Util
   * @author Alexander Zuev