scalastyle checks for sbt. All warnings for now. Execute using 'sbt scalastyle'
Merge branch 'master' of github.com:amplab/shark into ampmaster
Warnings now errors. Disabled cyclomatic complexity
Rebase to 'master' of github.com:amplab/shark

Conflicts:
	project/SharkBuild.scala
Style fixups across all code after the introduction of scalastyle style checker tool.
Add a HadoopTableReader, for scanning tables stored in Hadoop.
Add a HeapTableReader, for scanning tables stored in the Spark block manager.
Add a TachyonTableReader, for tables managed by Tachyon.

Partitioned tables in Tachyon are not yet supported, though.
makeRDDForTablePartitions => makeRDDForPartitionedTable, since the former can be confused with RDD[TablePartition].
Some comments for classes in TableReader.scala.
Put HadoopTableReader in its own file.
Cleanup TableScanOperator imports.

This also gets it to compile...
Some style cleanup in TableReader and HadoopTableReader.
Merge pull request #203 from harveyfeng/table-read-refactor

Add a TableReader trait and implementations for scanning tables stored in Hadoop, Tachyon, and Spark's block manager.
Bug in MemoryStoreSinkOperator - UnionRDDs aren't actually flattened...
Unit test for UnionRDD "flattening".
Import ordering...
filter() => find() in SQLSuite when searching for nested UnionRDDs.
Unit tests for flattening UnionRDDs for partitioned tables.
Don't modify 'test_cached' table in SQLSuite...