And more local music news...by D.X. Ferris..."Real rap is back," declares MC Siege at the onset of Idols & Icons, the new album by Edotkom, a duo that was once one of Cleveland hip-hop's bright lights. In street years, 2002's Obsidian was an eon ago. But that's not a problem for the group; it never was big on street cred. The double threats still write lyrics about business, comic books, movies and maturity. "It officially marks the return of the back-packing hip-hop movement," says producer/rhymer Heiku.…