ZoneInfoFile doesn't honor future GMT offset changes

The ZoneInfoFile class doesn't analyse if there is any GMT offset changes in
future. Currently, the 'getZoneInfo' method always creates the ZoneInfo with
willGMTOffsetChange equals to false.
This causes sun/util/calendar/zi/TestZoneInfo310.java test failure with new 2013h [1] timezone data :
America/Eirunepe : America/Eirunepe
    offset=-18000000,dstSavings=0,useDaylight=false,transitions=35,offsets=4,checksum=-1671726781,gmtChanged=false
[NG]offset=-18000000,dstSavings=0,useDaylight=false,transitions=35,offsets=4,checksum=-1671726781,gmtChanged=true
----------System.err:(13/744)----------
java.lang.RuntimeException: FAILED: America/Eirunepe

[1] JDK-8027370