By Daniel Kline McDonald’s isn’t bringing back All-Day Breakfast, but it’s trying something that fans of the morning meal will love. For quite some time people seem to have been adding eggs to foods not usually topped with eggs. We’ve seen eggs with a loose yolk added to pizzas and placed on top of hamburgers. It’s a trend that works because a runny egg actually enhances a lot of foods (sorry, Guy Fieri). In a broader sense, the line between breakfast and lunch or dinner has been blurring. Chicken and waffles has become a menu staple that melds the two ideas perfectly, and oddly none of the ma…