AMQP-308 Add Spring Remoting over AMQP
Add classes to expose and use a spring-remoting-service via amqp

Update @since in javadoc and copyright header to include 2013

Add a test for the remoting classes

Add  @author javadoc and copyright headers

Remove unnecessary test context

AMQP-308 Polishing, Docs

Minor Polishing.

Reference Doc.

Add tests that use RabbitMQ (if available).

Handle timeout on client side (throw exception).

Switch implementation to RemoteInvocation* classes

Added explanation for MessageConverter behavior

Polishing
  remove unused constant
  assert that a replyToAddress is provided and reject permanently if not