[8u60] approval request for 8067420, 8068985

[A. Sundararajan]

Please approve.

Bugs:

https://bugs.openjdk.java.net/browse/JDK-8067420
https://bugs.openjdk.java.net/browse/JDK-8068985


jdk8u webrev: http://cr.openjdk.java.net/~sundar/8067420_8068985/webrev.00/

jdk9 review threads:

http://mail.openjdk.java.net/pipermail/nashorn-dev/2014-December/004025.html
http://mail.openjdk.java.net/pipermail/nashorn-dev/2015-January/004103.html

Backported 'as is' except for modular source layout difference.

Thanks,
-Sundar