Lintian tag information: source-contains-debian-substvars (type: warning)

Description (from lintian-explain-tags)

Lintian found a substvars file in the Debian diff for this source package.
The debian/substvars (or debian/package.substvars) file is usually
generated and modified dynamically by debian/rules targets, in which case
it must be removed by the clean target.

Please refer to Variable substitutions: debian/substvars (Section 4.10) in
the Debian Policy Manual for details.

Visibility: warning
Show-Always: no
Check: debian/substvars
Renamed from: diff-contains-substvars

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