Review and cleanup of consistency checker.

- added required argument for an output file name for bad keys
- changed Reporter to print out 'just the key' to the output file; it
  outputs more info at DEBUG level in general.
- removed 'quiet' option
- throw exceptions:
  - if # partitions differ across clusters
  - if replication factor is hinky
  - if isExpired encounters unknown type
- main catches exceptions and fails fast
- changed system.out debugging to logger.trace

src/java/log4j.properties

@@ -19,6 +19,3 @@ log4j.logger.voldemort.utils=INFO
 log4j.logger.voldemort.client.rebalance=INFO
 log4j.logger.voldemort.server=INFO
 log4j.logger.krati=WARN
-
-# log4j.logger.voldemort.utils.ConsistencyFix=TRACE
-# log4j.logger.voldemort.utils.ConsistencyFixWorker=DEBUG