As it turns out, North Korean officials have invited blues/rock guitarist Eric Clapton to play a concert in the communist state. This comes as a very big surprise, because North Korean authorities have long shunned rock and pop music, sistematically rejecting any chance of getting great singers to perform there.Ah, but there’s a catch here. Kim Jong Chol, the Swiss-educated son of national leader Kim Jong Il, is reportedly a fan of Eric Clapton. He…