celeryd: Added --purge as an alias to --discard
celeryd: Added --purge as an alias to --discard

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