hg: openjfx/9-dev/rt: 8144556: Add support to allow user specified rendering order

[chien.yang at oracle.com]

Changeset: 9f243fcb6ea1
Author:    ckyang
Date:      2016-04-18 13:39 -0700
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/9f243fcb6ea1

8144556: Add support to allow user specified rendering order
Reviewed-by: kcr

+ apps/toys/Hello/src/main/java/hello/HelloViewOrder.java
! modules/graphics/src/main/docs/javafx/scene/doc-files/cssref.html
! modules/graphics/src/main/java/com/sun/javafx/scene/DirtyBits.java
+ modules/graphics/src/main/java/com/sun/javafx/scene/ParentHelper.java
! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGGroup.java
! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGNode.java
! modules/graphics/src/main/java/javafx/scene/Node.java
! modules/graphics/src/main/java/javafx/scene/Parent.java
! modules/graphics/src/main/java/javafx/scene/layout/Region.java
! modules/graphics/src/test/java/javafx/scene/ParentShim.java
! modules/graphics/src/test/java/test/javafx/scene/NodeTest.java
! modules/graphics/src/test/java/test/javafx/scene/Node_cssMethods_Test.java
! modules/graphics/src/test/java/test/javafx/scene/Node_onInvalidate_Test.java
! modules/graphics/src/test/java/test/javafx/scene/Node_properties_Test.java
! modules/graphics/src/test/java/test/javafx/scene/Parent_structure_sync_Test.java
+ tests/system/src/test/java/test/robot/scenegraph/ViewOrderTest.java