[Pyrex] Same type does not resolve to itself when coming in through different .pxd files

[Dan Gindikin]

 > Instead, you should define it just once in one .pxd

That was one of the first things I've tried, but kept getting a syntax error, 
which I took to mean that you could not "cdef struct ..." or "ctypedef ..." in a 
.pxd file.

-- 
Dan