Lintian tag information: missing-explanation-for-contrib-or-non-free-package (type: information)

Description (from lintian-explain-tags)

The specified package is in the contrib or non-free archive area but does
not include a "Comment" (or "Disclaimer") field in its copyright file.

Please add a brief comment why this package cannot be part of the main
Debian distribution.

Please refer to Copyright information (Section 12.5) in the Debian Policy
Manual for details.

Visibility: info
Show-Always: no
Check: debian/copyright/dep5

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