BU GHRAIB, Iraq, April 27 — They were killed perhaps three weeks ago, blindfolded, their hands bound behind their backs, then shot by a government that was itself about to die. Even as American troops neared the huge prison here, Iraq continued to execute suspected spies.In the last two days, relatives looking for loved ones have unearthed 14 bodies, not inside a cemetery, but in a pit just outside Block 5, which was reserved for foreigners. Neighbors said they had found 10 more corpses on the prison grounds — like the others, all in civilian clothes and apparently killed...