[8u60] approval request for 8072853: SimpleScriptContext used by NashornScriptEngine doesn't completely complies to the spec regarding exception throwing

[A. Sundararajan]

Correct 8u-dev webrev link: 
http://cr.openjdk.java.net/~sundar/8072853/8u60/webrev.00/

thanks
-Sundar

A. Sundararajan wrote:
> Please approve.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8072853
> jdk9 review thread: 
> http://mail.openjdk.java.net/pipermail/core-libs-dev/2015-May/033499.html
> jdk8u webrev: http://cr.openjdk.java.net/~sundar/8072853/README
>
> Backported 'as is' except for modular source code layout difference.
>
> Thanks,
> -Sundar