INT-3402: Late Resolution for Channel Names

JIRA: https://jira.spring.io/browse/INT-3402

* Move `channel name to channel` resolution logic to the action, e.g. `sendReplyMessage`
* Remove resolution logic from `MessagingAnnotation` Processors
* Fix `AggregatorAnnotationPostProcessor` to invoke `handler.afterPropertiesSet()` one more time,
because of `AbstractMethodAnnotationPostProcessor` `this.beanFactory.initializeBean(handler, handlerBeanName)`
* `Filter` annotation: allow `property-placeholder` for the `discardWithinAdvice`
* Fix `EnricherParserTests4-context.xml` duration: use just `0` for the `reply-timeout`

INT-3402: Add `synchronized double check`

INT-3402: Polishing according PR comments

INT-3402: Optimization for `AbstractCorrelatingMH`
INT-2474: MGS: logging Exception at debug level

JIRA: https://jira.spring.io/browse/INT-2474
INT-3455 Orderly Shutdown Improvements

JIRA: https://jira.spring.io/browse/INT-3455

Do not stop schedulers and executors - allows mid-flow
QueueChannels to be drained.

Stop all inbound MessageProducers (that are not OrderlyShutdownCapable).
INT-3455 Polishing; PR Comments