<i18n dev> [9] RFR: 8173423: Wrong display name for supplemental Japanese era

[Naoto Sato]

Hello,

Please review the fix to the following bug:

https://bugs.openjdk.java.net/browse/JDK-8173423

The proposed fix is located at:

http://cr.openjdk.java.net/~naoto/8173423/webrev.00/

There is a functionality in Japanese Imperial Calendar to supplement a 
new era from system property. The code path from java.time did not 
retrieve the supplemental name before the fix, thus the era number "3" 
was displayed instead. The fix intends to retrieve the correct name, and 
return it to java.time formatters.

Naoto