After years of debate, Yale University announced Saturday it will change the name of a residential college that honors a 19th century alumnus and former U.S. vice president who was an ardent supporter of slavery. Yale trustees said the Ivy League university is renaming Calhoun College after trailblazing computer scientist Grace Murray Hopper, a mathematician who earned Yale degrees in the 1930s, invented a pioneering computer programming language and became a Navy rear admiral.