If there’s a job title of the decade, “whisperer” has to be a contender. More than a decade after “The Horse Whisperer” appeared on movie screens, and four years after the debuts of “The Dog Whisperer” and “The Ghost Whisperer” on TV, “whispering” is still gaining steam among a huge range of consultants and instructors who promise subtle yet authoritative transformation in pretty much every aspect of life.