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ARROW-70: Add adapt 'lite' DCHECK macros from Kudu as also used in Parquet

Also added a null pointer DCHECK to show that it works. cc @emkornfield

Author: Wes McKinney <wesm@apache.org>

Closes #33 from wesm/ARROW-70 and squashes the following commits:

258d77b [Wes McKinney] Add adapt 'lite' DCHECK macros from Kudu as also used in Parquet