[8u] approval request for 8146240: Three nashorn files contain "GNU General Public License" header

[Sundararajan Athijegannathan]

Please approve.

Bug: https://bugs.openjdk.java.net/browse/JDK-8146240

jdk9 review thread:
http://mail.openjdk.java.net/pipermail/nashorn-dev/2016-January/005799.html

jdk8u webrev: http://cr.openjdk.java.net/~sundar/8146240/8u/webrev.00/

Backported 'as is' without any 8u specific modifications.

Thanks,

-Sundar