[9] Review Request for 8011616: JWindow.getLocation and JWindow.getLocationOnScreen return different values on Unity

[Semyon Sadetsky]

Hello,

Please review fix for JDK9:
bug: https://bugs.openjdk.java.net/browse/JDK-8011616
webrev: http://cr.openjdk.java.net/~ssadetsky/8011616/webrev.00/
WM sends the real window position in the configuration event but window 
peer does not set it to the target. Solution is: do set.

--Semyon