By Uditha Jayasinghe and Alasdair Pal COLOMBO (Reuters) -Sri Lanka lifted a nationwide curfew for 12 hours on Saturday, further easing tight curbs as new Prime Minister Ranil Wickremesinghe made first his cabinet appointments after clashes between pro- and anti-government groups killed nine people. More than a month of predominantly peaceful protests against the government turned violent this week after supporters of former Prime Minister Mahinda Rajapaksa stormed an anti-government protest camp in the commercial capital Colombo, burning tents and clashing with protesters and police. The initi…