add antlr switch for pig vs hive
improve Cascading PrintStream tap
improve Hive tests (load test fails without any message)
fix gradle build
fix serialization issue with Cascading in Hadoop
fix staling config settings in Hive tests

introduce clean() option in Settings to remove stale data
add cleanup of ES properties in HiveEmbeddedServer
expose nested exception message since Hive doesn't
minimize output from Pig tests
add maven plugin to allow local maven repo installation. Add (commented) cloudera CDH4.2 dependencies and maven repo
add TODO comment to handle custom Writables
add toString() to ESSource and ESTarget
merge with upstream/master