Call me reductive but if I were pitching a film version of Mark Haddon's 2003 best-seller, The Curious Incident Of The Dog In The Night-Time, the headline above would do the trick. The prestige British import of Broadway's fall season, this fine heartbreaker of a show, adapted from the novel by Simon Stephens, arrives courtesy of the National Theatre and a phalanx of top Broadway producers, at the Barrymore Theatre sans stars, cunning score or much else — unless you're…