conf vars in manual

[Karl Berry]

Patrice,

I wonder if we should do something to check the consistency of the
manual and the code wrt conf variables, as we do (sort of) wrt the
command list.  (util/txicmdlist and doc/refcard/txicmdcheck)

Would it be feasible to dump out a list of all the conf vars?  Or all
that should be documented, if that's different?

Thanks,
k