Include start code as part of HServerAddress
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                 Key: HBASE-1158
                 URL: https://issues.apache.org/jira/browse/HBASE-1158
             Project: Hadoop HBase
          Issue Type: Sub-task
    Affects Versions: 0.20.0
            Reporter: Jim Kellerman
            Assignee: Jim Kellerman
             Fix For: 0.20.0


If we do not take the startcode into consideration when recovering from a 
server death, then we cannot know if the data in ROOT or META pertains to the 
the current instance or the previous one.

With ZK this should be easier if we modify HServerAddress to contain the 
startCode of a HRegionServer instance. It would be immediately visible whether 
or not the region was on the dead server or the new server.

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