<i18n dev> Additional infomation for JDK-8048123

[Mitsuru Matsushima]

Hi.

I reported JDK-8048123 before.
But I notice this issue is more complex.

It's unable to attach files at the web form, so I post to ml.

At first, I thought it's a issue of the fix for JDK-8173423.
However, I think it's a issue of CalendarNameProviders now.

I tested attatched AupplementalEraTest2.java with 3 providers (COMPAT, CLDR and HOST).
And I compared the result as dateFormatComparison.png.

I think SHORT and NARROW should be same form.
Thus, I think the values of follows are wrong.

 -At SimpleDateFormat:
   SHORT form of CLDR
 -At DateTimeFormatter:
   NARROW form of COMPAT and CLDR
   Narrow form of HOST


TEST ENVIRONMENT:
 JDK: 9-ea+174
 OS: Microsoft Windows [Version 6.1.7601] Japanese


Mitsuru