Modernize velo tools

• Add final keywords to component classes
• Add missing override keywords
• Prefer implicitly generated destructors over explicit trivial destructors
• Remove unused finalize() methods
• Remove #ifndef WIN32
• Remove CVS/SVN keywords
• hide all warnings from Boost, CLHEP and ROOT (see gaudi/Gaudi!205 (merged) and gaudi/Gaudi!192 (merged))