[9] Review request: 8179644: Update copyright header for files modified in 2017

[Kevin Rushforth]

Hi Chien,

Please review the following simple fix to update the copyright header dates:

https://bugs.openjdk.java.net/browse/JDK-8179644
http://cr.openjdk.java.net/~kcr/8179644/webrev/

Thanks.

-- Kevin