* protocol doc & impl cleanup

router/java/src/net/i2p/router/transport/TransportImpl.java

...a/src/net/i2p/router/transport/tcp/ConnectionBuilder.java

...a/src/net/i2p/router/transport/tcp/ConnectionHandler.java

...va/src/net/i2p/router/transport/tcp/ConnectionRunner.java

.../router/transport/tcp/PersistentConnectionTagManager.java

...er/java/src/net/i2p/router/transport/tcp/TCPListener.java

...r/java/src/net/i2p/router/transport/tcp/TCPTransport.java

router/java/src/net/i2p/router/transport/tcp/package.html