added function calls, native function objects and runtime builtins

src/main.c

@@ -220,9 +220,19 @@ int main(int argc, char **argv)
 					RuntimeError error;
 					RuntimeError_Init(&error, runtime);
 
+					if(!add_builtins(runtime, (Error*) &error))
+						{
+							fprintf(stderr, "Couldn't load builtins: %s\n", error.base.message);
+							Debug_Free(dbg);
+							Source_Free(src);
+							Executable_Free(exe);
+							RuntimeError_Free(&error);
+							return 1;
+						}
+
 					Object *result = run(runtime, (Error*) &error, exe, 0, NULL, 0);
 
-					if(result == NULL || !Object_Print(result, stderr, (Error*) &error))
+					if(result == NULL)
 						{
 							fprintf(stderr, "RUNTIME ERROR: %s.\n", error.base.message);
 							
@@ -238,8 +248,7 @@ int main(int argc, char **argv)
 							Runtime_Free(runtime);
 							return 1;
 						}
-
-					fprintf(stderr, "\n");
+					
 					Runtime_Free(runtime);
 					Debug_Free(dbg);
 				}