The large airlines have a lot of "stroke" in places like Nigeria. They could do a joint funding thing with Air France to refurbish the lounge which would be a very small cost for a very large improvement for a start.
Apart from getting the security situation in the check in area under control, not much else they can do on their own I suppose. It just seems strange that Lagos has been transformed into an acceptable facility while P.H. is still in the dark ages.