hg: openjfx/8/graphics/rt: Fix to RT-30155 - Rectangle with negative dimension (width or height) should not be rendered

[hang.vo at oracle.com]

Changeset: 4b8166ef78a1
Author:    Chien Yang <chien.yang at orcale.com>
Date:      2013-05-01 17:33 -0700
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/4b8166ef78a1

Fix to RT-30155 - Rectangle with negative dimension (width or height) should not be rendered
Reviewed by Jim and Kevin

! prism-common/src/com/sun/prism/impl/shape/BasicRoundRectRep.java