RFR: JDK-8204109: JDK-8203945 broke nashorn

[Tim Bell]

Erik:

> In my recent cleanup change for the nashorn build, I accidentally
> removed a line that caused the nasgen tool to never run. This is causing
> a bunch of nashorn tests to fail in tier2. I had run tier1-3 on an
> earlier version of the patch, but forgot to rerun after the last edit.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8204109
>
> Webrev: http://cr.openjdk.java.net/~erikj/8204109/webrev.01/

Looks good.

/Tim