update setup.py/__init__.py (python version, contributors)

[JonnyJD]

init.py still includes Python 2.3+ as a requirement. We either need to change or check that. We can possibly backport some fixes in stable, but Python 2.4 came out in 2004 and we might just change it to 2.4+.
TODO: test if v3.0.1 actually runs with python 2.4.

We also need to change the project name and append to the list of contributors.

setup.py
is also a place to change.

Additionally the README.txt might need some changes.

[JonnyJD]

http://packages.debian.org/de/python
oldest version: 2.5 in lenny (oldstable)

http://packages.debian.org/search?keywords=python2.4
currently available in sid and lenny (oldstable).

python2.3 is not found for debian.