NICK KREWEN Special To The Spectator May 26, 1998   TORONTO — It’s a case of “History Repeating” for Alex Gifford, but success is sweeter the second time around. The last time Gifford was in Toronto, he was a teenager playing sax for British punk rockers The Stranglers, a position he held from 1984 until lead singer Hugh Cornwell announced his departure in 1990. Now he’s back on a promo…