By Denny Dyroff, Entertainment Editor, The Times Superunknown The show at the Uptown! Knauer Performing Arts Center (226 North High Street, West Chester, www.uptownwestchester.org)  on November 22 is more than just a concert. Renowned regional rockers Superunknown, who have been captivating audiences with their stirring renditions of Chris Cornell classics, have announced that they will be dedicating...