[15] RFR: 8236903: ZoneRules#getOffset throws DateTimeException for rules with last rules

[naoto . sato]

Hi,

Please review the fix to the following issue:
https://bugs.openjdk.java.net/browse/JDK-8236903

The proposed changeset is located at:

http://cr.openjdk.java.net/~naoto/8236903/webrev.00/

This edge case throws an out-of-bounds DateTimeException in 
ZoneRules.findYear() on calculating the year. Instead of relying on 
LocalDate.ofEpochDay(), inlining the year caluculation from that method, 
and cap to the MAX value if needed, will solve the issue.

Naoto