Cristiano Ronaldo became football's all-time leading goalscorer by firing Juventus to Italian Super Cup glory against Napoli. Portugal international Ronaldo registered the 760th strike of a remarkable career in the 64th minute to help reigning Serie A champions Juve claim the trophy with a 2-0 win.   The 35-year-old former Manchester United and Real Madrid forward moved one goal ahead of Czech player Josef Bican, who officially managed 759 strikes between 1931 and 1955. Loren