test/javax/swing/JOptionPane/6464022/bug6464022.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 6464022
  * @summary Memory leak in JOptionPane.createDialog
  * @author Pavel Porvatov
  * @library ../../regtesthelpers
  * @build Util