[Cython] working patch for generating code targeting Py 2.6 and Py 3.0

[Stefan Behnel]

Hi,

Robert Bradshaw wrote:
> Trac is a good place to put the patches and status though.

Sure.


> Are you sure
> we want a separate branch for this, as we want to retain Py2
> compatibility as we work on this.

I do not expect this to be finished with a single patch, so there will be
things that may break somewhere in between and there may be things that
require larger refactorings. Keeping cython-devel somewhat stable and having a
separate branch where things can become unstable along the way helps us in
keeping up the ability to continue the normal development without being
directly impacted by Py3 work.

The idea is to merge things over step-by-step when they prove to be correct
and "stable enough".

Stefan