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.*}

从 parquet-hadoop/src/main/java/parquet/hadoop/ParquetInputSplit.java 中链接的结束逻辑位置开始，并跟踪使用它的构造函数路径。检查在缺少 row-group offsets 时如何使用结束值。完成的标准是移除错误的计算，同时不改变受支持的 split 和 row-group 行为。

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