Install and take ownership of a few more directories
    
      - rhbz#1444601
          /run/openvpn-client    using %{_rundir}
          /run/openvpn-server
    
      - rhbz#922786
          /var/lib/openvpn       using %{_sharedstatedir}
    
    Also update the 2.4.2-1 %changelog about using system liblz4 instead
    of the OpenVPN built-in library.