RFR 9: 8040058: IsoFields.WEEK_BASED_YEAR adjustInto incorrect

[roger riggs]

This review is for patches provided by Steve Colebourne to address

8040058 <https://bugs.openjdk.java.net/browse/JDK-8040058>: 
IsoFields.WEEK_BASED_YEAR adjustInto incorrect and the related issue with
WeekFields.weekOfWeekBasedYear().range being incorrect

Webrev:
http://cr.openjdk.java.net/~rriggs/webrev-FixIsoFieldsWeekBasedYear-8040058/

I've reviewed it and the change looks correct.

Roger