- Add run-time requirement for polkit-default-privs.

- Rely on rpmlint auto-loading support for rpmlintrc files.

- Do not copy .override. config files.

- Properly redirect stdout to /dev/null.

- Try two for supporting multiple rpmlintrc, since shell for loops
always loop, even if the files don't exist.

- Support multiple rpmlintrc files correctly.

- Use --mini-mode when calling rpmlint from rpmlint-mini package.

- Update to require rpmlint >= 2.
* Due to rpmlint now being a proper Python package, build a virtual
environment, and copy all Python requirements into it.
* Replace rpmlint-deps.txt with stdlib.txt, as we need to provide the
Python standard library directly.
* Lightly rewrite rpmlint.wrapper to support the new world order.
- Drop the config snippets, they are not required with rpmlint 2.
- Renumber Source numbers.
- Filter some more warnings in rpmlint-mini.rpmlintrc.