RFR(XS): 8130306: enable running Nashorn test on Windows

[Hannes Wallnoefer]

+1

Am 2015-07-02 um 10:56 schrieb Michael Haupt:
> Dear all,
>
> please review and sponsor this change:
> RFE: https://bugs.openjdk.java.net/browse/JDK-8130306
> Webrev: http://cr.openjdk.java.net/~mhaupt/8130306/webrev.00
>
> This fixes, in test code, an issue with executable file naming on Windows.
>
> Thanks,
>
> Michael
>