MADRID (Reuters) - Amanda Bolanos, a young Spanish scientist, knows she will not be coming home. "Exiled in Cambodia" read the banner the molecular biologist carried at a protest in Madrid against government cutbacks. Back on leave from Phnom Penh, the 30-year-old researcher plans to head for Latin America if her present contract in Cambodia is not renewed. She sees little chance of finding work in Spain. Bolanos and other scientists say sharp cuts in Spanish state spending on research and development, part of efforts to lower the national debt, leave them little choice but to go abroad. ...