All You Need Is Love; HANS CHRISTIAN ANDERSEN The Life of a Storyteller By Jackie Wullschlager; Alfred A. Knopf: 490 pp., $30; THE FAIRY TALE OF MY LIFE An Autobiography By Hans Christian Andersen; Cooper Square Press: 570 pp., $22.95 paper; TRAVELS By Hans Christian Andersen Translated from the Danish and edited by Anastazia Little; Green Integer: 384 pp., $12.95 paper - Kirsch, Adam (Los Angeles Times)