making cassandra-cli friendlier to scripts
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                 Key: CASSANDRA-1340
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1340
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Eric Evans
            Assignee: Eric Evans
            Priority: Minor
         Attachments: 
v1-0001-CASSANDRA-1340.-cassandra-cli-batch-processing-mode.txt

It is currently possible (and useful) to execute bulk commands with 
cassandra-cli using shell redirection. However, there is  no mechanism for 
handling errors, and the same output seen in an interactive session is echoed 
to the terminal.

The patch that follows accepts a new argument, (--batch), which:
* disables initialization of the history file
* suppresses output (stdout only)
* exits on error with status 2 for invalid syntax, 4 for invalid requests, and 
8 for everything else.

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