RFR nashorn copyright typos

[A. Sundararajan]

Please review.

http://cr.openjdk.java.net/~sundar/nashorn_copyright/9/webrev.00/

This is forward port of the same fix done in jdk8u-dev.

http://mail.openjdk.java.net/pipermail/jdk8u-dev/2015-July/004048.html

Thanks,
-Sundar