Squashed commit of the following:

commit a5a047b3c552aebe2607482c83d219d4f2f48862
Author: RashmiDR <rashmi@datatorrent.com>
Date:   Wed Oct 16 18:06:29 2013 -0700

    Parameterizing HighLow fixes #147
Pulled in request #159 which fixes issue #147; fixed compile error in contrib/src/main/java/com/datatorrent/contrib/frauddetect/TransactionStatsAggregator.java and conflict in demos/src/main/java/com/datatorrent/demos/mobile/PhoneMovementGenerator.java