Dory Previn, the lyricist for three Oscar-nominated songs who as a composer and performer mined her difficult childhood, bouts of mental illness and a very public divorce to create a potent and influential personal songbook, died on Tuesday at her home in Southfield, Mass. She was 86... Her early success came in Hollywood, writing songs for the movies, generally as a lyricist working with her husband, André Previn, who later earned fame as a classical composer and conductor...