SHARK-203 : Make orc_diff_part_cols unit test pass
Merge pull request #194 from WANdisco/OrcPart

SHARK-203 : Make orc_diff_part_cols unit test pass
Merge remote-tracking branch 'shark/hive0.11' into hive0.11

Conflicts:
	src/main/scala/shark/execution/TableScanOperator.scala