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.*}

Beginne mit parquet-hadoop/src/main/java/parquet/hadoop/ParquetInputSplit.java an der verlinkten Stelle der End-Logik und verfolge den Konstruktorpfad, der sie verwendet. Prüfe, wie der Endwert verwendet wird, wenn Row-Group-Offsets fehlen. Erledigt ist die Aufgabe, wenn die fehlerhafte Berechnung entfernt wurde, ohne das unterstützte Split- und Row-Group-Verhalten zu ändern.

Vom Indexierungsmodell aus dem Issue-Text verfasst.