WINSTON-SALEM, N.C. — Bill Leonard, dean of Wake Forest University Divinity School, Winston-Salem, N.C., has defended his school’s decision to admit a lesbian when it opened last fall. “I’ll die on this floor of non-discriminatory admissions,” Leonard told a group of self-described “mainstream” Baptists during a late April meeting in Atlanta, Baptist news services reported. During a question-and-answer session at…