Reference column_order field from column indexes

[asfimport]

We have created the field column_order to specify the ordering of a primitive type. This is used for the row group level statistics but we never referenced this from the column indexes feature while in both cases we heavily rely on the ordering.

Reporter: Gabor Szadovszky / @gszadovszky
Assignee: Gabor Szadovszky / @gszadovszky

Related issues:

• Allow for Unsigned Statistics in Binary Type (is related to)

_{Note: This issue was originally created as PARQUET-2016. Please see the migration documentation for further details.}

[asfimport]

Antoine Pitrou / @pitrou:
Issue fixed by Github PR #173