ParquetInputSplit end calculation bug

The calculation for end of a split using the file metadata is broken by PARQUET-108. The calculation was updated to use the requested schema so that the end of a block would be the end of the last projected column. But [the end logic](https://github.com/apache/incubator-parquet-mr/blob/master/parquet-hadoop/src/main/java/parquet/hadoop/ParquetInputSplit.java#L94) actually calculates the total number of bytes that are selected.

The end of a split is only used to select row groups when a block has no row group offsets, which doesn't happen when the constructor that uses the broken method is called. However, this should still be removed.

After 1.6.0, I want to move Hive to pass FileSplits directly rather than wrapping them in ParquetInputSplit. The internal reader code can handle mapping row groups to splits because it needs to for PARQUET-84.

**Reporter**: [Ryan Blue](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=rdblue) / @rdblue

_{**Note**: *This issue was originally created as [PARQUET-207](https://issues.apache.org/jira/browse/PARQUET-207). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}

parquet-hadoop/src/main/java/parquet/hadoop/ParquetInputSplit.java のリンク先にある終了ロジックの箇所から始め、それを使用するコンストラクターの経路を追ってください。row-group のオフセットが存在しない場合に、終了値がどのように使用されるかを確認してください。サポートされている split と row-group の動作を変更せずに、壊れた計算を削除できれば完了です。

索引モデルが issue の本文から書いたものです。