JMS Docbook Polishing

Clarify the use of a `TemporaryQueue` with a `<reply-listener/>`
only applies when no `reply-destination` is provided.
INT-3379 - Allow Placeholders for Enums

JIRA: https://jira.spring.io/browse/INT-3379

Change enumerated attributes to a union with xsd:string
to allow placeholders.

JMS and XML deferred to 4.1 due to the amount of
changes needed to the parsers. See INT-3384.
Update tests to be compatible with Spring Web Services 2.2

Spring Web Services 2.2 added a new method, afterCompletion, to
ClientInterceptor. To allow Spring Integration's tests to be run
successfully against Spring Web Services 2.2, this commit adds empty
implementations of this method to two test implementations of the
interface.
INT-3311,INT-3377: Update Spring-* Dependencies

JIRA: https://jira.spring.io/browse/INT-3377
      https://jira.spring.io/browse/INT-3311

Resolve SD-Mongo deprecations
INT-3376 Support Meta-Annotation Att. Override

JIRA: https://jira.spring.io/browse/INT-3376

Allow user annotations with Messaging Meta-Annotations
override/supplement attributes set on the meta-Annotation.

PR Comments and More

- Do not create a bean definition for the annotation (interface)
when `MessagingGateway` is used as a meta-Annotation.
- For a `MessagingGateway` restore attributes overridden with empty values
- Other PR comments.

Fully support meta-Annotation hierarchy.
Polishing:

* Upgrade JRuby to 1.7.12
* Replace `AnnotationFinder` with moving its methods to `MessagingAnnotationUtils`
* Refactor aggregator classes to use `MessagingAnnotationUtils` to determine the method for annotation
* Fix `IntegrationComponentScanRegistrar` to skip annotation classes
* Fix `MessagingGatewayRegistrar#replaceEmptyOverrides`
* Improve `MessagingAnnotationPostProcessor` to use `ReflectionUtils.USER_DECLARED_METHODS` `MethodFilter`
* Change the `MethodAnnotationPostProcessor` hierarchy to use just list of annotations to process attributes