“If you’re here writing a newspaper piece or something, please try to ignore that…” So remarks 70-year-old Neil Young, quite possibly the coolest man on earth, a handful of songs into a career-spanning, increasingly rapturous set with Promise of the Real at Belfast’s downright reverential SSE Arena tonight. In typically unflustered fashion, he’s just stopped a few seconds into the intro of ‘Harvest Moon’ having neglected to attach his harmonica; a rare blip that not only serves as a brief reminder that even the greatest have their moments of infinitesimal fallibility but also that we’re in the presence of a master who – briefly setting aside his towering…