test/java/awt/dnd/Button2DragTest/Button2DragTest.java

rev 14031 : 8159690: [TESTBUG] Mark headful tests with @key headful.

Backport of 14851:980da45565c8 from jdk9.  542/842 hunks applied directly from
the patch. 44 I resolved manually.  The remaining hunks are for filenames that
do not exist in jdk8u.

*** 19,37 ****
   * 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
!   @bug 4955110
!   @summary tests that a drag ends on button2 release
!   @author Alexander.Gerasimov area=dnd
!   @library    ../../regtesthelpers
!   @build      Util
!   @run applet/othervm Button2DragTest.html
! */
  
  
  /**
   * Button2DragTest.java
   *
--- 19,38 ----
   * 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
!  *  @key headful
!  *  @bug 4955110
!  *  @summary tests that a drag ends on button2 release
!  *  @author Alexander.Gerasimov area=dnd
!  *  @library    ../../regtesthelpers
!  *  @build      Util
!  *  @run applet/othervm Button2DragTest.html
!  */
  
  
  /**
   * Button2DragTest.java
   *