Regression test development: JDK-8139764

[Andrey Rusakov]

Please look at my regression tests for JDK-8139764 
<https://bugs.openjdk.java.net/browse/JDK-8139764>
8139460 (fx 9) <http://cr.openjdk.java.net/%7Earusakov/8139460/webrev_9.00/>
8139460 (fx 8 backport) 
<http://cr.openjdk.java.net/%7Earusakov/8139460/webrev.00/>

Also please commit my diff for JDK-8139764 
<https://bugs.openjdk.java.net/browse/JDK-8139764>
http://cr.openjdk.java.net/~arusakov/8139764/webrev.01/