* Nadal downs last year’s runner-up Janowicz * Gasquet, Wawrinka complete Tour finals lineup * Djokovic also through to last eight (Recasts after Nadal wins) By Julien Pretot PARIS, Oct 31 (Reuters) – World number one Rafa Nadal broke the stubborn resistance of Poland’s Jerzy Janowicz’s to win 7-5 6-4 and reach the last eight of the Paris Masters on Thursday. In the semi-finals of the Paris event – one of only three Masters titles the Spaniard has yet to win – Nadal faces local favourite Richard Gasquet who, along with Swiss Stanislas Wawrinka, have completed the ATP World Tour finals lineup.