[Cython] Porting the Docs

[Stefan Behnel]

Fabrizio Milo aka misto wrote:
> Ah! finally!
> 
> + 10

He, you're just one! ;)

But I'm +1, too. This will give us two things: ReST is easy to edit, and it
will be easier to integrate into the Python docs if (sorry, when) we make it
into stdlib.

Thanks, Gabriel!

Stefan