RFR: 8080344: Incorrect GPL header

[huizhe wang]

Hi,

The license header in these files contain an incorrect YEAR format, e.g. 
"Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved." 
where the YEAR should have been "2013,".

Please review:
http://cr.openjdk.java.net/~joehw/jdk9/8080344/webrev/

Thanks,
Joe