Lintian tag information: add-component-copyright (type: information)

Description (from lintian-explain-tags)

The sources ship an extra orig component, but the named debian/copyright
file lacks a separate entry for it.

Tarballs usually include a COPYING or LICENSE file, or a shipping manifest
of some kind. It is good practice to list those license terms separately
in our copyright files.

Please refer to the uscan(1) manual page, Bug#915181, and Bug#915384 for
details.

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

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