OWIN support for the Web API 2 and MVC 5 integrations in Autofac

Currently, in the both the Web API and MVC frameworks, dependency injection support does not come into play until after the OWIN pipeline has started executing. This is simply a result of the OWIN support being added to both frameworks after their initial release. In fact, the OWIN support in MVC does not yet extend to the self hosting scenario and is limited to plugging in OWIN middleware.