This change removes WebAPI-style method parameter overloading and the
automatic mapping of 'unnamed' actions based on method names. For all
practicaly purposes, this change restores the MVC5 behavior for action
selection.
WebAPI-style overloading will be brought back in the future via a set of
opt-in constructs.
https://roslyn.codeplex.com/workitem/246 affects usage of code with the
latest build of Roslyn with Moq v4.2. The workaround involves ensuring a
closure is created. Updating affected tests to make ToString() calls on
local variables to create these closures.