INT-3106 Fix Bogus Warning Logs

INT-3007 introduced a warning log when advising a non-message handler
class. However, the log was also emitted when other methods on a
real MessageHandler were invoked.

Suppress the message in these cases and improve the log by
including the concrete class for the method rather than the
interface on which the method is declared.
INT-3099 Fix Package Tangle

Introduced by INT-3099 - tcp.connection and tcp.connection.event

Move events to connection.