Cleaned up configuration setup. AuditingBeanDefinitionRegistrarSupport now exposes a getAuditingHandlerBeanName() method to determine the bean name to be used for the AuditingHandler.
Removed the unnecessary type arguments for AuditingHandler so that the setter taking an AuditorAware<T> can be successfully wired against implementations other than AuditorAware<Object> with Spring 4. The type argument was superfluous anyway as internally the type wasn't referred to and the handler is not used on a by-type basis.
Basic infrastructure for supporting annotation based auditing configuration.
Introduces AuditingBeanDefinitionRegistrarSupport for store specific auditing configuration enhancements. An AuditorAware instance is wired into the Auditing handler automatically if it's present in the ApplicationContext. The auditorAwareRef attribute of the enabling annotation can be used to disambiguate in case multiple AuditorAware instances are present in the configuration.
Original pull requests: #26, #53.
We're not manually converting the DateTime instance into the user field type but delegate to a ConversionService instance. This will allow us to automatically adhere to enhancements in conversion capabilities to the DefaultConversionService.
