Clean up control file and rules file
- Since the packaging repo is under pkg-octave-team group, add the Octave Team into the uploaders list.
- Bump debhelper compat version to v13.
- Drop hardcoded library dependency in favor of ${shlibs:Depends} auto-generation.
- Use ${RM} instead of "rm" debian/rules Makefile.
- Drop legacy .PHONY instruction, those old targets no longer exist.
I have tested that the package can be built successfully.
@fangq @rafael If that looks good to you, please consider merge it and I think the packaging is largely complete. Maybe we should consider uploading into the NEW queue.
See also the RFS bug: https://bugs.debian.org/962640 . Let me know if there's other issues.