8027848: The ZoneInfoFile doesn't honor future GMT offset changes

[Aleksej Efimov]

Hi,
Can I have a review for a 8027848 [1] bug fix . There is unimplemented 
functionality related to the future GMT offset changes.
The ZoneInfoFile class doesn't analyses if there is such offset changes 
and as a result incorrectly creates the ZoneInfo instance.
It was discovered during the TestZoneInfo310 test execution as part of 
tzdata2013h update [3].

Thanks,
Aleksej

[1] The bug: https://bugs.openjdk.java.net/browse/JDK-8027848
[2] Proposed fix: http://cr.openjdk.java.net/~aefimov/8027848/webrev.00
[3] tzdata2013h review thread: 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2013-November/022898.html