Reference Perl home page and documentation
    
    It does not make sense to refernce Modularity technology as all
    modules would have the same links. It's better to point to the
    packaged software. Thus we will link to Perl upstream home page and
    Perl language documentation. However, we will retain Fedora's
    Bugzilla as the bug tracker because the upstream should not be
    bothered with the bugs in a packaging.