test/java/awt/event/KeyEvent/ExtendedKeyCode/ExtendedKeyCodeTest.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.

*** 29,38 ****
--- 29,39 ----
  import sun.awt.ExtendedKeyCodes;
  import sun.awt.SunToolkit;
  
  /*
   * @test
+  * @key headful
   * @bug 8007156 8025126
   * @summary Extended key code is not set for a key event
   * @author Alexandr Scherbatiy
   * @run main ExtendedKeyCodeTest
   */