Bulk Operation

SPARK-20960 Implement the copy() method in ColumnarMap

SPARK-20960 add map type support to ColumnVector

SPARK-20960 add calendar interval type support to ColumnVector

SPARK-20960 simplify ColumnVector.getArray

SPARK-20960 rename ColumnVector.anyNullsSet to hasNull

SPARK-20960 move dictionary related APIs from ColumnVector to WritableColumnVector

SPARK-20960 ColumnarRow should be an immutable view

SPARK-20960 remove set methods in ColumnarRow

SPARK-20960 ColumnarArray should be an immutable view

SPARK-20960 remove the get address methods from ColumnVector

SPARK-20960 remove ColumnVector#loadBytes

SPARK-20960 remove unused features in ColumnarBatch

SPARK-20960 move ColumnVector.Array and ColumnarBatch.Row to individual files

SPARK-20960 Add test suites for complicated cases in ColumnarBatchSuite

SPARK-20960 simplify the array offset and length in ColumnVector

SPARK-20960 generalize the dictionary in ColumnVector