Streamline FastJetBuiler (follow up to !954)
- add support for using a few (fastjet) enums as Gaudi::Property
- prefer enums to be Gaudi::Property - this allow to have readable string in the configuration as as opposed to having magic integer values, and avoids the need for updateHandlers
- follow introduction of LHCb::Algorithm as frontend to Gaudi::Functional
- avoid 'OUT&' as input arguments to functions, prefer to return them by value instead
must be applied in conjunction with Moore!976 (merged)
Edited by Gerhard Raven