[Vala] support for Python C API

[Celil <celil kj gmail com>]

I am writing Python bindings to a library that is written in Vala.
Currently, I need to output the header files, and write the bindings in
C. However, tt would be very nice if it was possible to write then in Vala.

Is anybody writing a vala vapi for "Python.h"? It would be pretty sweet
to be able to write python extensions in vala.

Celil