Router: Misc. javadocs and debug

.../src/com/southernstorm/noise/protocol/SymmetricState.java

router/java/src/net/i2p/data/router/RouterInfo.java

router/java/src/net/i2p/router/OutNetMessage.java

router/java/src/net/i2p/router/RouterVersion.java

.../net/i2p/router/transport/crypto/DHSessionKeyBuilder.java

...r/java/src/net/i2p/router/transport/udp/UDPTransport.java

router/java/src/net/i2p/router/tunnel/pool/TunnelPool.java