Int 3460: Support output-channel when an AbstractCorrelatingMessageHandler is 'ref'd by a Service Activator	

INT-3460: Support output-channel when an AbstractCorrelatingMessageHandler is 'ref'd by a Service Activator	

* allow AbstractCorrelatingMessageHandler's output referenced by service-activator output-channel
* add test 
What is the reason for new class, if it has only one test-method?
Anyway the name of class should not be tied with sinlge JIRA.
Please, provide more convinient class names, even if SF code style suggest something like this.
Right, test-methods can have a JIRA number.

Why don't do the same in the `ResequencerIntegrationTests` ?