Support for remote message processors

This commit adds back support for remote message processors. See messaging documentation for more info.

To connect to remote host a username and password authentication is required.
To lookup a destination it needs to be exported in the 'jboss/exported' JNDI naming context on the remote host to be visible outside of it.

TorqueBox.configure do
  queue "/queue/remotequeue" do
    remote do
      host "somehost:4444"
      username "username"
      password "password"
    end

    processor SimpleProcessor do
      concurrency 2
    end
  end
end

Additional chabges:

1. Add 'org.projectodd' category to trace log for integs
2. Added documentation
3. Added integration test
4. Updated schema for YAML and DSL