By WENDY DRIVER Hypnotic Djemma el Fna square in the heart of old Marrakech continues to be the city's shopping and foodie hub It was 5am and still dark when I awoke with a start to the sound of hypnotic wailing. It was more than 30 years since I had last visited Morocco as a young backpacker and I had forgotten about the muezzin's call to prayer that rouses you from sleep every morning. Back in