Changed EnableMvcSupport config section and classes to be: DefaultRenderingEngine which uses an enum.

Added a real handy Enum<T> class for parsing/traversing enums.

src/Umbraco.Web/Routing/RenderingEngine.cs

@@ -1,8 +0,0 @@
-namespace Umbraco.Web.Routing
-{
-	internal enum RenderingEngine
-	{
-		Mvc,
-		WebForms
-	}
-}