PARIS (Reuters) - Johnny Hallyday, whose death at 74 was announced by his wife and the French president on Wednesday, was a rock and roll giant in his native France and survived drug use, family strife and near-death episodes to strut the stage for more than fifty years. Hallyday, with his cowboy swagger and gravelly voice, was a “French Elvis” for hundreds of millions of followers, mostly if not all in his native country, where he sold more records than any other singer.