Change all license headers to comply with REUSE specification.
Fix #16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
This addresses #21707 and adds a second package test case for a
non-semver compatible version (this might be overkill though since you
could also edit the old package version to have an epoch in front and
see the error, this just seemed more flexible for the future).
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>