If you’ve been to the box suites at RFK Stadium, you may have noticed photos of acts that have played the stadium lining the hallway – U2, New Kids on the Block, the Promise Keepers and so on. But after we finished laughing at the New Kids, one plaque off to the side caught our eye: “Robert F. Kennedy Stadium, site of Olympic football, 19 July-4 August 1996.” What? The Olympics were at RFK? There…