Is there a living violinist other than Gil Shaham I would rather hear perform a solo recital? The unhesitating answer is no, even considering the bevy of stellar contemporary violinists that quickly come to mind. Shaham and his superb Japanese accompanist Akira Eguchi gave a brilliant—make that transcendent—program at Copley Symphony Hall Thursday (Feb. 7), a balance of classic and new repertory whose masterful execution was exceeded only by their evident conviction of the significance of their offerings. Opening with J. S. Bach’s Partita No. 3 in E Major for Solo Violin, BWV 1006, and closing with Beethoven’s A Major…