God’s mills may grind slowly and exceedingly fine, but the rumor mills of Hollywood are swift and exceedingly coarse. After all, you don’t just uninvite 200 guests and dismantle a sound-stage wedding set built to resemble Roberts’s Smyrna, Ga., backyard because, as Roberts’s publicist put it, “they just decided not to do it right now.” While Tinseltown tongues wagged, a London tabloid, The Sun, reported that Roberts had called off the wedding because of Sutherland’s liaison several months ago with an L.A. stripper named Amanda Rice, a.k.a. Raven. (Did Julia quoth “Nevermore” to Kiefer?) Kiefer’s publicist admitted that Sutherland knows Raven but said she’s not the enemy and he never slept with her. Meanwhile, Roberts’s publicist denied that this was all an elaborate hoax to confound the press. That didn’t stop the rumormongers. Last weekend they were flapping over the likelihood of seeing “Two on the Aisle.”