issue #290, hive map conversion to parquet schema
remove originalType check for typeEquals of GroupType and add tests for HiveSchemaConverter
remove originalType check for typeEquals of GroupType and add tests for HiveSchemaConverter
Merge branch 'master' of github.com:tongjiechen/parquet-mr

remove unnecessary tab and spaces
Merge pull request #335 from tongjiechen/master

issue #290, hive map conversion to parquet schema