Added a new "test" command for setup.py so ``python setup.py test`` works.
Added a new "test" command for setup.py so ``python setup.py test`` works.

mitsuhiko/celery,cbrepo/celery,frac/celery,mitsuhiko/celery,ask/celery,cbrepo/celery,WoLpH/celery,frac/celery,WoLpH/celery,ask/celery