INT-3330 `EnableIntegrationMBeanExport` Annotation

JIRA: https://jira.spring.io/browse/INT-3330

INT-3330: Enable SpEL evaluation

INT-3330: Polishing for `MBeanExporterHelper`

INT-3330: Fix `errorChannel` early access

INT-3330: Polishing according PR comments

Polishing - copyrights, author, docs
INT-3344 Update Spring Framework to 4.0.3

JIRA: https://jira.spring.io/browse/INT-3344