By Libby George LONDON (Reuters) - Lebanon's defaulted government bonds have nearly quadrupled in price over the past year as investors bet on signs of economic recovery but a wild variance in estimates of their likely worth after a restructuring could restrain any further rally. A "recovery value" for the bonds will not become clearer until lawmakers decide what level of losses struggling local banks must take, which in turn will inform how much money the government can funnel to bondholders. The bonds ...