xboxpy is hard to test

[JayFoxRox]

As xboxpy is meant as a library, it's currently not easy to test.

For now, I'd recommend pushing unit tests to my python-scripts collection until we have a dedicated place for this.

The gdb interface is hard to use and quite limited in terms of performance and features.
For running on a real Xbox you'll also need a modified fork of nxdk-rdt or you need xbdm (both not easy to obtain or install).