hg: openjfx/9-dev/rt: RT-40261: [Linux] Stage.setIconified(true) not working

[david.hill at oracle.com]

Changeset: da03c817ec26
Author:    ddhill
Date:      2015-06-04 12:45 -0400
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/da03c817ec26

RT-40261: [Linux] Stage.setIconified(true) not working
Reviewed-by: kcr

! modules/graphics/src/main/native-glass/gtk/glass_window.cpp
! modules/graphics/src/main/native-glass/gtk/glass_window.h