RFR 8157789: Nashorn sample/test.js should not use undocumented System property

[Mandy Chung]

> On May 24, 2016, at 9:38 PM, Sundararajan Athijegannathan <sundararajan.athijegannathan at oracle.com> wrote:
> 
> Please review http://cr.openjdk.java.net/~sundar/8157789/webrev.00/ for
> https://bugs.openjdk.java.net/browse/JDK-8157789
> 

+1

It’s good to replace with a documented system property.

Mandy