* Introduce ControllerAttribute and use it to mark base classes as controllers.
* Changed rules for controller discovery to:
* All controller types must be public, concrete, non open generic types.
* NotController attribute is not applied to any type oif the hierarchy.
* The type name ends with controller.
* Controller attribute is applied to the type or to one of its ancestors.
* Added a Release method to IControllerActivator
* Changed Create in IControllerActivator to take in a ControllerActionContext
* Move the check to determine if a controller can be instantiated into the controller activator.
* Move logic for disposing controllers into the controller activator and make release on the
controller factory delegate into the activator.
* Changed release methods to take in a controller context.
jacalvar
Doug Bunting
Ajay Bhargav Baaskaran
N. Taylor Mullen