Goo Goo Dolls frontman Johnny Rzeznik expects to start his latest Canadian tour with a screech.No, he isn't having throat problems. And no, he hasn't gone heavy metal. The singer-guitarist simply plans to cap his band's opening night in St. John's by getting Screeched In -- a local custom that involves downing a shot of the eponymous potent rum, puckering up to a codfish and answering the question 'Is ye an honorary Newfoundlander?' with the phrase 'Indeed I is me ole cock, and long may your big jib draw.'"At first I didn't believe it was true," chuckles Rzeznik down the line from his L.A. hom