EXCLUSIVE: Ron Howard’s AFM buyer presentation for documentary Pavarotti, about iconic opera singer Luciano Pavarotti, was one of the hot tickets at last month’s market. Distributors have responded well to the project with a string of key deals inked by White Horse Pictures and HanWay Films. Deals have closed for Germany and Austria (Wild Bunch), Spain (A Contracorriente), China (DDD Dream), Australia/NZ (Madman), Japan (Gaga) and South Korea (AUD). Italy has been…