[9] Review request for 8166147: Ubuntu 16.04: expandable content goes outside of the alert dialog

[Semyon Sadetsky]

Hello Kevin & David,

Please review the fix for jfx9:

bug: https://bugs.openjdk.java.net/browse/JDK-8166147

webrev: http://cr.openjdk.java.net/~ssadetsky/8166147/webrev.00/

XLib size requests and hints was mixed up with GTK ones.

--Semyon