<i18n dev> RFR: 8242541: Small charset issues (ISO8859-16, x-eucJP-Open, x-IBM834 and x-IBM949C)

[Ichiroh Takiguchi]

Hello.

Could you review the fix ?

Bug:    https://bugs.openjdk.java.net/browse/JDK-8242541
Change: https://cr.openjdk.java.net/~itakiguchi/8242541/webrev.00/

I applied following changes:
* Missing historical name alias in ISO8859-16
* Typo hisname on x-eucJP-Open
* x-IBM834 and x-IBM949C charset source codes should be template style

I appreciate your feedback and suggestions.

Thanks,
Ichiroh Takiguchi
IBM Japan, Ltd.