Oops -- misread PEP 440.  No hyphens at all, ever.
Oops -- misread PEP 440.  No hyphens at all, ever.

Also 'foo'.find('x') never returns None -- it returns -1.  But now we
just make sure there are no hyphens, so use `not in' instead.

probcomp/bdbcontrib,probcomp/bdbcontrib