INT-2126 Polishing - PR Comments and More

PR Comments:
* Rename event adapter to tcp-connection-event-inbound-channel-adapter
* Add the ability to filter events (restrict to one or more subclasses)

Also:
* Add publishEvent() to TcpConnectionSupport to permit, for example,
  connection interceptors to publish events via the connection, but
  the event source can only be the connection used to publish the event.