ONCE the A-list star of hit flicks The Shining and Popeye, actress Shelley Duvall has become a recluse living in miserable squalor and babbling about space aliens as she battles her mental demons on a rundown Texas ranch. The broken-down 67-year-old looks more like a bag lady than the glamorous star who played Jack Nicholson’s wife in The Shining. Duvall, coping with broken teeth, pimply skin and threadbare clothes, gave a shocking, heartbreaking exclusive interview to GLOBE on her Blanco, Texas, land. “I’m miserable,” Shelley declared. “I really don’t want to die like this.