Jerry Herman returns the love By Chris Jones
They were literally scalping tickets for the sold-out, one-night Jerry Herman roadshow at Northwestern University on Wednesday night, as if the peppy composer of "Hello, Dolly" and "Mack and Mabel" was some kind of septuagenarian rock star and the public at large just couldn't live through a sticky August night without hearing just one more rendition of "Before the Parade Passes By." Talk about looking at the world a…