gadget: Add more information to warnings
gadget: Add more information to warnings

We have the gadget at hand, so we should print out some
information that helps tracking down where it comes from.

grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita