Update tests for entrypoints

test/contracts/simple_storage.aes

@@ -6,11 +6,11 @@
    contract SimpleStorage {
        uint storedData
 
-       function set(uint x) {
+       entrypoint set(uint x) {
            storedData = x
        }
 
-       function get() constant returns (uint) {
+       entrypoint get() constant returns (uint) {
            return storedData
        }
    }
@@ -20,9 +20,9 @@ contract SimpleStorage =
 
   record state = { data : int }
 
-  function init(value : int) : state = { data = value }
+  entrypoint init(value : int) : state = { data = value }
 
-  function get() : int = state.data
+  entrypoint get() : int = state.data
 
-  stateful function set(value : int) =
+  stateful entrypoint set(value : int) =
       put(state{data = value})