to take care of creating .exe wrappers for windows.
To make this work needed to
- rename modules with a "-" in it (not a valid name)
- add an __init__.py to the tools directory
- create an entry point dictionary which stores the right associations
- New parameter -c/--clean (remove the broken symlinks)
- Added docstrings
- Some bugs corrected
- Compatibility with the old version is not broken (so the triggers in the debian packages are still working)
