If Adam McKay is looking for material to construct a sequel to his Oscar-winning screenplay for “The Big Short,” may I direct him toward “The China Hustle”? It’s got everything he needs from overvalued stocks to immoral brokers to royally screwed investors. Oh, and toss in a former presidential candidate caught with his hands in a $50 billion cookie jar and a sleazy investment banker who fancies himself the second coming of Jordan Belfort, the rock’n, [...]