MBeanInfoBuilder not consistent with the jmx spec.

Mark Hale reported

"Standard MBeans are not automatically recognised by the metaclass MBeanInfoBuilder."

and

"The metaclass MBeanInfoBuilder does not process the superinterfaces of a management interface. This behaviour is not consistent with the jmx spec."

to the Loom project. I'm rerouting these issues here. The original Jira issues can be found under http://jira.codehaus.org/browse/LOOM-70 and http://jira.codehaus.org/browse/LOOM-71. I had a quick look at the patches and they seemed to to the job. I attach a single patch here too. Please verify.

Thanks to Mark for spotting this.