AMQP Basic qos support added to Channel class. There is an option
for global qos which is currently not added. Also, added auto tests
for qos definition, proper qos operation and verifying that RabbitMQ
does not support prefetchSize.
- remove now takes flags rather than magical booleans
- fixed a bug delete -> deleteOk in QueuePrivate so we can listen for sync queue destruction
- added error signals to Client(Connection), and Channel
- removed automatic calls to remove a Queue when the channel is closed, or Queue is deleted
this behavior is already handled by the AutoDelete declare option