Report Merge events via the listener API

We needed to make the JGroupsTransport listenable. We needed events for detecting that a merge has taken place

org.infinispan.factories.EmptyConstructorFactory

Just added JGroupsTransportNotifier.class to the @DefaultFactoryFor annotation.

org.infinispan.notifications.jgroupstransport.JGroupsTransportNotifier

Interface for the JGroupsTransportNotifier notifier.

org.infinispan.notifications.jgroupstransport.JGroupsTransportNotifierImpl

The JGroupsTransportNotifier notifier implementation. Supports events for a merge.

org.infinispan.notifications.jgroupstransport.annotation.MergeViewAccepted

The bare annotations to add to JGroupsTransport listeners.

org.infinispan.notifications.jgroupstransport.event.Event

The interface for the merge view accepted event implementations.

org.infinispan.notifications.replicationqueuelistener.event.MergeViewAcceptedEvent

The event implementations.

org.infinispan.transport.Transport

Updated to implement listenable.

org.infinispan.transport.jgroups.JGroupsTransport

Updated to throw an event when a merge view is accepted.