SARAJEVO: Bullet holes still pockmark many Sarajevo buildings; others threaten collapse under disrepair, but street artists in the Bosnian capital are using their work to reshape a city steeped in history.A half-pipe of technicolor snakes its way through the verdant Mount Trebevic, once an Olympic bobsled route — now layered in ever-changing art.“It’s a really good place for artists to come here to paint, because you can paint here freely,” Kerim Musanovic told AFP, spraycan in hand as he repaired his work on the former site of the 1984 Sarajevo Games.Retouching his mural of a dragon, his pain