Collective-zamqp

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- Add vhm_method_prefix-option to replace old vhm-options
[datakurre]

-------------------

- Fix to store durable publishable messages during reconnection period
in memory on the base of message's delivery_mode-proprety, not
producer's durable-property
[datakurre]

- Combine loggers and reduce logging
[saily, datakurre]

-------------------

- Set ``use_vhm=False`` for ZAMQP Test Layer
[saily]

- Add option ``use_vhm`` to make VHM-methods optional (to allow use of
hostname=localhost:8080/Plone in development)
[datakurre]

- Added a configureable scheme, hostname and port keyword to be passed into
fake request object in consumers. We well automatically rewrite those URLs
using VirtualHostMonster.
[datakurre, saily]

- Reduce amount of logging, fixes 2. [saily]

- Documentation updates
[saily]

- Add prefetch_count-option for connections
[datakurre]

- Add fixture with RabbitMQ trace firehose consumer to ease debugging
[datakurre]

- Fix to requeue messages also when subclass of ConflictError is raised during
commit (e.g. ReadConflictError)
[datakurre]

-------------------

- Fix to process Pika timeouts on every asyncore poll to fix heartbeat issues

-------------------

- Add configuration options for 'exchange_auto_declare' and
'queue_auto_declare'
- Fix 'queue_exclusive = True' to imply also 'queue_durable = False' and
'queue_auto_delete = True'

-------------------

- Update keepalive-ping-queue to use 1 hour message ttl
- Add option (defaulting to true) for monkey patching Zope2 lifetime_loop for
shorter asyncore.poll-timeouts on consuming instances.