LOS ANGELES — There are, broadly speaking, two Ridley Scotts. There's Big Ridley, the visionary filmmaker of large-scale epics who has spent nearly 50 years creating some of the most indelible worlds in modern movies. He's the Ridley who unleashed a xenomorph aboard the Nostromo in "Alien" (1979), conjured the dystopian Los Angeles of "Blade Runner" (1982), resurrected ancient Rome in ...