Seagram’s liquor heiress Clare Bronfman wept in court Friday as family members signed on to pay her whopping $100 million bond, so she can stay out of jail while awaiting trial for her role in an upstate sex-slave cult. Dressed in a black long-sleeved shirt and baggy slacks, a blubbering Bronfman, 39, wiped tears from under her glasses as Brooklyn federal court Judge Nicholas Garaufis reminded her mom and brother in law that they’re there to keep her honest. “I think she knows the responsibility as well,” said Basit Igtet, a Libyan entrepreneur who is married to Bronfman’s sister, Sara....