hg: openjfx/8/graphics/rt: [TEST-ONLY]: Added test exposed by question in RT-13820

[hang.vo at oracle.com]

Changeset: 9491417fb3e0
Author:    rbair
Date:      2013-10-08 14:46 -0700
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/9491417fb3e0

[TEST-ONLY]: Added test exposed by question in RT-13820

! modules/graphics/src/main/java/com/sun/javafx/sg/prism/NGRegion.java
! modules/graphics/src/test/java/com/sun/javafx/sg/prism/NGRegionTest.java