test/java/awt/event/MouseWheelEvent/WheelModifier/WheelModifier.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.

@@ -19,15 +19,18 @@
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 
-/* @test
+/*
+   @test
+   @key headful
    @bug 8041470
    @summary JButtons stay pressed after they have lost focus if you use the mouse wheel
    @author Anton Nashatyrev
-*/
+ */
+
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.*;
 import java.util.concurrent.CountDownLatch;