PHOTO: Marlin Briscoe as a Denver Broncos rookie quarterback before he was switched to receiver. Visit my website homepage, TomShanahan.Report By TOM SHANAHAN In many ways Jimmy Raye was Marlin Briscoe and Marlin Briscoe was Jimmy Raye. They were both pioneering figures connected in similar but different ways. Briscoe died on Monday at age 76 from circulation problems in his legs and from pneumonia. Raye recalled how he and his old friend were tied together in history as…