dh_setup_copyright: Handle unknown reference files

Several tweaks to try to overcome the issues with rust packages and unknown reference files.

Signed-off-by: Walter Lozano walter.lozano@collabora.com

debian/changelog

+debhelper (13.11.4+apertis8) apertis; urgency=medium
+
+  * dh_setup_copyright: Warn if no package found.
+    The script dh_setup_copyright tries to find the package each reference
+    file belongs to, however, in some cases this is not possible and there
+    is now warning about that.
+    Add a warning about the unknown file to allow further investigations.
+  * dh_setup_copyright: Workaround rust-coreutils issues.
+    Package rust-coreutils is special as it uses a different folder for the
+    registry, causing dh_setup_copyright to fail at finding the package
+    reference files belong to.
+    To avoid this issue, take into account this fact and replace the names.
+
+ -- Walter Lozano <walter.lozano@collabora.com>  Tue, 22 Oct 2024 16:24:59 -0300
+
 debhelper (13.11.4+apertis7) apertis; urgency=medium
 
   * dh_setup_copyright: Sort JSON keys to preserve reproducible builds