What have Francois Hollande, Jean-Michel Jarre and Julio Eglesias in common? Struggling? Well, if it helps Richard Branson, Bruce Springsteen, Kody and Eddy Merckx have all done the same. The answer is that each have dined at L’Ecailler du Palais Royal, a lovely restaurant in the equally lovely Sablon quarter of Brussels. A quick glance at…