JIRA: https://jira.springsource.org/browse/INT-1834
The general issue has been raised about `MessageHistory` for annotated endpoints (`@ServiceActivator`, `@Transformer` etc.)
* Register generated `MessageHandler`s as beans with concrete names based on component, method and annotation.
* Add tests and docs
In addition revert the version for JRuby to 1.7.8 as other latests versions have a NPE issue around `System.console()`
Doc Polishing
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