<i18n dev> [9] RFR: 8042126: DateTimeFormatter "MMMMM" returns English value in Japanese locale

[Masayoshi Okutsu]

Hello,

Please review the fix for narrow month names support. The narrow names, 
typically one letter names, are derived from the CLDR data. But there 
are some semantic differences between the legacy JDK localization and 
CLDR. The root resources have English names in JDK, but those are 
language neutral in CLDR. I changed JDK resources to follow the CLDR 
convention. Also I added test data for narrow month names of all locales.

bug:
https://bugs.openjdk.java.net/browse/JDK-8042126

wevrev:
http://cr.openjdk.java.net/~okutsu/9/8042126/webrev.00/

Thanks,
Masayoshi