Get Shark to compile with latest Spark master.
Merge remote-tracking branch 'ampshark/master'
Remove Kryo references in SharkEnv. The ShuffleSerializer is explicitly specified as the object serializer for shuffle ops.
Merge pull request #189 from harveyfeng/master

Get Shark to compile with latest Spark master.
Code cleanup.

This code is not used and the intended optimization is covered else where. This code/tests cause issues with hadoop 0.23.9. Cleaning up.
Added a release cleanup script.
Remove unused HIVE_WAREHOUSE var in run-tests-from-scratch

This was also creating an empty, unused ../hive-warehouse directory.
In run-tests-from-scratch, no need to check for 'hive-warehouse' directory existence when skipping Hive build.
Merge pull request #193 from harveyfeng/master

Remove unused HIVE_WAREHOUSE var in run-tests-from-scratch
Merge pull request #192 from rxin/release_cleanup

Added a release cleanup script.
Merge pull request #191 from sundeepn/cleanup

HiveConfSerializer code cleanup
Merge remote-tracking branch 'ampshark/master' into partition-opt
Don't use Operator#execute() in TableScanOperator.

Plus a few other minor style changes.