[parquet-mr] Implement specification-compliant floating point comparison

[asfimport]

Currently, the floating point comparison order defined by parquet-format is ambigous and different implementations use different orderings. Once the specification is made unambigous (PARQUET-1222), implementations should be updated to conform to it.

Reporter: Zoltan Ivanfi / @zivanfi

Related issues:

• Specify a well-defined sorting order for float and double types (is blocked by)

_{Note: This issue was originally created as PARQUET-1223. Please see the migration documentation for further details.}