FRIDAY: >> Starting tonight, George Mason Stadium plays host to the region’s annual D.C . College Cup. The soccer teams of George Washington, American, Howard, and George Mason will square off in two rounds of games. Though the tournament is conspicuously missing national powerhouses UMD and UVA, the event will still showcase some of the best young talent around. GW and AU kick off tonight’s slate (5:00 p.m.), with Howard and GMU rounding the night…