(LENOX, Mass.) – The Boston Symphony Orchestra has announced a new conductor lineup for five of the BSO’s 21 concerts to take place during the 2011 Tanglewood season. Charles Dutoit will lead the BSO’s July 8 Opening Night Gala Concert — an all-Italian program with excerpts from Bellini’s Norma and Verdi’sI lombardi, plus music of Rossini and Respighi…