Switch from serialization to std::serialize. (snapshot)

src/libsyntax/ast_util.rs

@@ -417,8 +417,8 @@ fn dtor_dec() -> fn_decl {
 // ______________________________________________________________________
 // Enumerating the IDs which appear in an AST
 
-#[auto_serialize]
-#[auto_deserialize]
+#[auto_encode]
+#[auto_decode]
 type id_range = {min: node_id, max: node_id};
 
 fn empty(range: id_range) -> bool {