Merge pull request #373 from ulrichb/feature/VirtualCallsInCtor_only_bug_368

Moved fake manager creation and initial configuration into the proxy generator (Part I)
#365, #371 Added OnFakeConfiguration() to fake options and delegated Strict() and CallsBaseMethods() to it, so that they affect also virtual calls during the constructor
 #371 Also moved handling of Wrapping() fake option into LazyFakeManagerProvider