RFR: 8228623 : Update copyright year to 2019 for several java properties file

[li.jiang at oracle.com]

Hi,

Please review this trivial change to correct the copyright year in 
several java properties file. I updated the copyright year in English, 
Simplified Chinese and Japanese resource files.

Bug:
https://bugs.openjdk.java.net/browse/JDK-8228623

Webrev:
http://cr.openjdk.java.net/~ljiang/8228623/webrev/

Thanks,
Leo