The rest of the words may indeed need reworking but I simply do not understand the bias against the word "man" when one is referring to the human race. It is simply a generic term to refer to people in general. I remember some people getting really worked up over philosophers using the word "man" in the context of humanity. The implication that women are not part of the human race is so patently ridiculous that it seems the objection is taking things way off base. Linguistically it even makes sense, given that the word man is the root word for woman. The definition is even in the dictionary: "4. The human race; mankind: man's quest for peace."
Manpower seems just as ridiculous. When I hear manpower, I don't immediately think that it is the "power" of a man as opposed to a woman, I think manpower as in mankind-power -- the power of a person, as opposed to a machine.