RFR:JDK-8190391:nashorn: "!!" of nonzero even integer var becomes false when returned

[Priya Lakshmi Muthuswamy]

Hi,

Please review JDK-8190391 : nashorn: "!!" of nonzero even integer var 
becomes false when returned

JBS : https://bugs.openjdk.java.net/browse/JDK-8190391
webrev : http://cr.openjdk.java.net/~pmuthuswamy/8190391/webrev.00/

Thanks,
Priya