Clarify what should happen when receiving a query message after AKE
There are a few interactions that are not clear in the protocol description. One of them is what should happen if we receive a new Query message after having completed an AKE. This could legitimately happen if the peer has two client programs connected to the same account.
Is the right behavior in this case to ignore the request and continue the conversation with the existing AKE, or throw away the current AKE and start a completely new AKE.
(from redmine: created on 2015-08-14)