EntertainmentThe best gift grownup movie lovers have gotten so far this year is The Best Exotic Marigold Hotel, the warm, funny, thoughtful story of seven British retirees who move to crowded, colorful Jaipur, India. They’re lured there by a brochure promising a life of inexpensive luxury at the titular hotel, but what they find is a run-down wreck of a place set amidst teeming crowds, abject poverty, and sometimes brutally primitive living conditions. For the Britons—played by Wilkinson, Judi Dench, …