RFC: Fix overloading issue in <cmath>

[Gabriel Dos Reis]

Phil Edwards <phil@jaj.com> writes:

[...]

| [*] BTW, Gaby, I figured on not doing any more merges from mainline as
|     long as the two branches are identical.  First time somebody goes to
|     actually check something in, we can move the branchpoint (same as I
|     did last time) and start from there.  Less confusion.

This makes sense to me.  

Once 3.2.3 is out and I got the name lookup improvement in and I
should have more time.

-- Gaby