A ground-breaking meeting between the Sri Lankan Government and Tamil Tiger separatists was held to shore up a ceasefire but no date was set for direct peace talks, the state’s top official for the peace process said on Wednesday.The first face-to-face meeting between the two sides in seven years surprised the island, which has already seen the peace process steam roll ahead in the last several months, with refugees returning home amid hopes of a permanent silencing of the guns. ‘‘It was mostly on the ceasefire agreement,’’ Bernard Gunatilake, the head of the Peace Secretariat, the government’s body for handling the peace.