Willowy, Oscar-nominated actress Jill Clayburgh rose to prominence in the mid-seventies as the modern and complex heroine of such dramas as “An Unmarried Woman” (1978) and “Starting Over” (1979). Her star declined in the 1980s, during which she concentrated on motherhood and independent features, but she returned to performing in the late 1990s and early 2000s in a string of feature films – most notably as the sympathetic adoptive mother of Augusten Burroughs in the movie version of his best-selling memoir, “Running with Scissors” (2006) – as well as a series of television projects, most