Bug#920647: lintian: inconsistent-appstream-metadata-license false positive

["beuc@debian.org" <beuc@debian.org>]

Package: lintian
Version: 2.5.123

Hi,

I patched a appdata.xml file.
Lintian now warns about a licensing mismatch, not because of the file
itself, but because the *quilt working directory* has a copy that
doesn't match the path in debian/copyright:

IW: ballz source: inconsistent-appstream-metadata-license
.pc/appstream.patch/share/appdata/ballz.appdata.xml (cc0-1.0 != bsd-3)

This can be seen in ballz-1.0.3-2.

lintian needs to ignore ".pc".

Cheers!
Sylvain