close tachyon buffer.
make both SparkCached and TachyonCached RDD go through the same partition prune code path.
address comments: better naming.
change TachyonTableRDD from ColumnarStruct to TablePartition to align code path with Spark cached RDD.
Refactor and extends statistics computation for split pruning
1. Between and in clause pruning., 2. A simple bloom filter implementation 3. Murmur Hash 3 implementation in scala using Austin Appleby's x86-32 impl
Resolve merge conflicts
More tests for Column Stats
Merge pull request #129 from harsha2010/harshars-stats

Refactor column stats., add between and in pruning. introduce bloom filter and murmur hash implementation
Updated based on Spark internal API change.
Fixed column stats test warnings.
Fix HiveConf serialization.

Conflicts:
	src/main/scala/shark/execution/serialization/XmlSerializer.scala
Fix copyright.
Fix build problems due to https://github.com/mesos/spark/pull/838
Update bin/dev/run-tests-from-scratch now that Hadoop agnostic builds have been
merged into Spark master. See https://github.com/mesos/spark/pull/838
Update a comment I missed when migrating to Hadoop agnostic build.
Typos in exporting spark build vars.
Update default version of Hadoop. As of https://github.com/mesos/spark/pull/838/files
version 1.0.4 is the oldest version supported now (thus 0.20.205.0 is not supported any more).
Merge pull request #132 from mateiz/build-fix

Fix build problems due to https://github.com/mesos/spark/pull/838
Removed Java version check in CI script.