Following the logic of a dream-in which characters merge, locations change in an instant, and a locked door recurs obsessively-Strindberg's 1902 "A Dream Play" is a potent mix of Freud plus "Alice in Wonderland," Caryl Churchill, perhaps the most fascinating and respected female dramatist in the English-speaking world, has taken on Strindberg's "Dream" in this spare and resonant adaptation. Caryl Churchill's singular and striking plays include "Cloud...