test/javax/swing/RepaintManager/IconifyTest/IconifyTest.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.

*** 20,29 ****
--- 20,30 ----
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  /*
   * @test
+  * @key headful
   * @bug 4665214
   * @summary Makes sure that RepaintManager doesn't attempt to repaint
   *          a frame when it is iconified.
   * @author Scott Violet
   * @run main IconifyTest