test/java/awt/Toolkit/AutoShutdown/ShowExitTest/ShowExitTest.sh

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.

*** 23,32 ****
--- 23,33 ----
  # questions.
  #
  
  #
  #   @test       ShowExitTest.sh
+ #   @key        headful
  #   @bug        6513421
  #   @summary    Java process does not terminate on closing the Main Application Frame
  #
  #   @compile ShowExitTest.java
  #   @run shell/timeout=60 ShowExitTest.sh