Advice regarding chess engine database files license

[Varun Hiremath <varun@debian.org>]

Hello All,

I am considering packaging Gaviota chess tablebase files and probing
code for Debian released under this MIT license:
https://sites.google.com/site/gaviotachessengine/license

The chess tablebase files are generated by the Gaviota Engine whose
license is clearly not DFSG compatible. However, the author is
releasing the generated database files under the MIT license. Is the
MIT license for these database files DFSG compatible?  There is an
accompanying probing code (used for reading the database files) which
is also available under the MIT license.

https://sites.google.com/site/gaviotachessengine/Home/endgame-tablebases-1

"""
The Gaviota Tablebases can be probed from your own program (engine or
interface). The code needed to do this has been released under the
liberal MIT license, so basically anybody can use it with almost no
restrictions. The tablebase files themselves, compressed (*.gtb.cp?)
and uncompressed (*.gtb) are also distributed under the MIT license.
"""
https://sites.google.com/site/gaviotachessengine/Home/endgame-tablebases-1

I maintain a package pychess which wants to use these database files.

Thanks,
Varun