NEWS: add entries for the changes in the python bindings

[Tomi Ollila]

On Sun, 29 Jan 2012 18:08:50 +0100, Justus Winter <4winter at informatik.uni-hamburg.de> wrote:
> This patch series adds a section for the python binding changes to the
> NEWS file.

LGTM -- although knowing which python 2.x versions works would
be nice to know. At least tests pass using python 2.5 but how
complete are those tests...

> 
> Cheers,
> Justus

Tomi