Redesign of job options management

• introduce a namespace to hold interfaces: Gaudi::Interfaces
• introduce a new interface Gaudi::Interfaces::IOptionsSvc
• deprecate IJobOptionsSvc methods
• rewritten JopOptionsSvc to implement the new interface and provide implementation of IJobOptionsSvc through the new methods
• modified ISvcLocator to provide quick access to the default implementation of Gaudi::Interfaces::IOptionsSvc
• modified all components bases to use the new interface
• bind properties to the option service (at initialize)
  • IOptionsSvc::set directly sets the actual property
  • IOptionsSvc::get returns the value of the actual property (as string) even if not originally set from option files
• added options to lazily set global defaults
  • JopOptionsSvc().GlobalDefaults = [(r'.*\.OutputLevel$', '5')] can replace MessageSvc().OutputLevel = 5

Note: includes !759 (merged)