Log message

Added zenqueue backend as zenqueued based heavily on a patch by Daniel Lindsley.
To use the zenqueued backend you'll need to set QUEUE_BACKEND to zenqueued, and
also set QUEUE_ZENQUEUE_CONNECTION.  The zenqueued backend defaults to using the
client for HTTP but you can use either the HTTP or native method by setting
QUEUE_ZENQUEUE_METHOD to http or native.  Note that zenqueue does not allow for
multiple named queues, so the name argument to the Queue constructor is ignored.
Several other options (__len__, delete_queue, and get_list) are not supported by
zenqueue.

	Add	/trunk/queues/backends/zenqueued.py	diff