angular.d.ts: new interface IServiceProviderClass

Instead of IModule.provider simply accepting an Function for a class
constructor, use an interface to enforce the type of class.
angular.d.ts: new interface IDirectiveFactory

Adds intellisense when constructing directive objects
angular.d.ts: new interface IServiceProviderFactory

Missed provider functions that return objects.  Ensure that they also
implement ng.IServiceProvider.
angular-agility need to use ng.IServiceProvider
angular.d.ts: update test to use class for module

Converted the test module, 'http-auth-interceptor', to a class to
eliminate error on using anonymous type constructor.
Merge branch 'patch-2' of github.com:ngbrown/DefinitelyTyped into ngbrown-patch-2
add test for angular.d.ts
Mt push origin master merge branch 'ngbrown-patch-2'