The Dilemma: You find yourself at a Chinese restaurant craving cylindrical food. But of which variety?Who You Can Impress: All the folks down at Hunan Garden. No longer do you need to hang your head in shame!The Quick Trick: If it's got a shell like a deep fried tortilla, it's probably an egg roll. And if you're thinking that deep frying tortillas is awfully American for Chinese food, you're onto