[9] Review request: 8144680: Stage.alwaysOnTop() doesn't work if a security manager is set

[Kevin Rushforth]

David & Chien,

Please review the following:

https://bugs.openjdk.java.net/browse/JDK-8144680
http://cr.openjdk.java.net/~kcr/8144680/webrev.00/

Thanks.

-- Kevin