GDANSK, Poland (A P) — Solidarity ch ief Lech W alesa re tu rned to a joyful hom ecom ing yesterday after m ysteriously disappearing for m ore than a day following his release from 11 m onths in martial-law custody. There was no im m ediate explana tion for Walesa’s delay in com ing hom e to the first-floor apartm ent in this Baltic port city w here his wife, seven children and hundreds of fri...