test/java/awt/MouseInfo/JContainerMousePositionTest.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
    @summary unit test for a new method in Container class: getMousePosition(boolean)
    @author dav@sparc.spb.su: area=
    @bug 4009555
    @run main JContainerMousePositionTest
  */