What happens to a play revived? A Raisin in the Sun, Lorraine Hansberry's powerful 1959 drama, has certainly not dried up: It bursts with intense family conflict, racial politics and social consciousness. Nor, in its new incarnation, does it sag with the heavy load of an underqualified star, as the 2004 Sean Combs revival did. The pivotal role of Walter Lee Younger"a restless Chicago chauffeur and would-be/won't-be e…
