add if __name__ == "__main__" in bootstrap.py script file to avoid some issue

[KLEIN Stéphane]

I use zc.buildout with nose unittest utils (http://somethingaboutorange.com/mrl/projects/nose/).

When I launch nose with doctest option, I've this error :

$ bin/test --with-doctest -v
Error: Invalid option --

This issue is raise by bootstrap.py script file because this script is load and executed by nose.

I suggest to add if __name__ == "__main__": in bootstrap.py file.

Regards,
Stephane

[Domen Kožar (ielectric+)]

This seems like reasonable to me, any objections?