[8u40] request for approval to backport of nashorn changesets

[Sergey Lugovoy]

Hi,
Please approve backport of the following 2 changesets from jdk9 to jdk8u40.
All changesets appled "as is"

Bug: https://bugs.openjdk.java.net/browse/JDK-8062638
changeset: http://hg.openjdk.java.net/jdk9/dev/nashorn/rev/0c9f3369f3d3

Bug:  https://bugs.openjdk.java.net/browse/JDK-8054343
changeset: http://hg.openjdk.java.net/jdk9/dev/nashorn/rev/2520d5e7bc5f

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Thanks,
Sergey