By Ethan Millman Music Editor “Cool little place, this, isn’t it?” Paul McCartney exclaimed as he looked off into the rafters, then to the sold-out crowd of 1,200 ecstatic fans at the Fonda Theatre in Hollywood Friday night, minutes after he and his band had launched the night with Beatles classic “Help.” As McCartney suggests, this is a different locale than he’d usually play, far more intimate than the usual arena or stadium gig one of the world’s most legendary artists would normally take on when they hit the road. And coming just a day after the singer dropped a new single and announced his first album in five years this week, it was impossible for it not to feel celebratory. Friday was the first of two Fonda underplays McCartney plays this weekend, with show two coming Saturday night.…