[OpenJDK 2D-Dev] RFR: add regression test for JDK-8144991

[Alexander Stepanov]

Hello,

Could you please review the following fix
http://cr.openjdk.java.net/~avstepan/8149558/webrev.00/
for
https://bugs.openjdk.java.net/browse/JDK-8149558
Just a single regression test added (still failing), plus minor 
correction for other test.

Thanks,
Alexander