TEN THOUSAND SAINTS By Eleanor Henderson. Ecco/HarperCollins Publishers, $26.99. Henderson’s fierce, elegiac novel, her first, follows a group of friends, lovers, parents and children through the straight-edge music scene and the early days of the AIDS epidemic. By delving deeply into the lives of her characters, tracing their long relationships not only to one another but also to various substances, Henderson catches something of the dark, apocalyptic quality of the ’80s. |