8u40 review (and test) request for RT-37945: NPEs for Canvas apps on SW pipeline

[Jim Graham]

webrev: http://cr.openjdk.java.net/~flar/RT-37945/webrev.00/
Jira: https://javafx-jira.kenai.com/browse/RT-37945

I tested with toys/CanvasTest/run-bitmap and run-vector modifying the 
build.xml to run them with the SW pipeline.  I also ran "gradle test" 
and it completed, but it wouldn't have run any tests under the SW 
pipeline by default.  Is there an easy way to test the SW pipeline 
without having to universally modify run-* script variables?

			...jim