Merge with a2711e44ba5de8b1675d7e0ee6aaa4a6c56a9b46
"""Multi-consumer multi-producer dispatching mechanismOriginally based on pydispatch (BSD) http://pypi.python.org/pypi/PyDispatcher/2.0.1See license.txt for original license.Heavily modified for Django's purposes."""fromdjango.dispatch.dispatcherimportSignal