[8u-dev] Request for approval: backport of JDK-8071909: Port testlibrary improvments in jdk/test to hotspot/test as required for DCMD test port

[Alexander Vorobyev]

Hi All,

I'd like approval for a JDK 8 backport of JDK-8071909 
(https://bugs.openjdk.java.net/browse/JDK-8071909)

The JDK 9 changeset applies clearly.

Later I am going to backport 
https://bugs.openjdk.java.net/browse/JDK-8071908 to JDK 8. In order to 
do it I need to backport JDK-8071909 at first.

JDK 9 Changeset:
http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/435d1f8837af
JDK 9 review thread:
http://mail.openjdk.java.net/pipermail/serviceability-dev/2015-January/016535.html 
(this thread is for both of JDK-8071909 and JDK-8071908)

Thanks,
Alexander