pythonPackages.pylibconfig: init at 0.2.4

Tests are disabled because they are not distributed within the
distribution :

```
$ curl -s https://pypi.python.org/packages/source/p/pylibconfig2/pylibconfig2-0.2.4.tar.gz | tar tz | grep test
$ curl -s
https://codeload.github.com/heinzK1X/pylibconfig2/tar.gz/master | tar tz | grep test
pylibconfig2-master/pylibconfig2/test/
pylibconfig2-master/pylibconfig2/test/__init__.py
pylibconfig2-master/pylibconfig2/test/test.py
```

Distribution from pypi is prefered because the git repository do not
have tags to clearly identify the various releases.