use SPDX names for licences
    
    https://docs.fedoraproject.org/en-US/packaging-guidelines/LicensingGuidelines/
    
    I see that when prompted to install something like: libreoffice-langpack-es
    when launching libreoffice from LANG=es_ES.UTF-8, when it wasn't already
    installed, that the packagekit prompt suggests that its "proprietary
    code", so tidy these up.