“Paul McCartney’s recent output has been surprisingly schizophrenic, veering from the cheeky Starbucks standards on Kisses on the Bottom to fronting a reconstituted Nirvana. But “New”, the title track off his upcoming solo album (October 14 in the UK and October 15 in the U.S), is what might be called classic Macca: a silly love song on par with “This One”, if not “Maybe I’m Amazed”. You’ll swear y”