test/java/awt/Focus/WindowIsFocusableAccessByThreadsTest/WindowIsFocusableAccessByThreadsTest.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.

*** 21,30 ****
--- 21,31 ----
   * questions.
   */
  
  /*
    @test
+   @key headful
    @bug      8047288
    @summary  Tests method isFocusable of Window component. It should be accessed only from EDT
    @author   artem.malinko@oracle.com
    @library  ../../regtesthelpers
    @build    Util