rm push/pop

internal/engine.cm

@@ -543,7 +543,7 @@ if (_init != null && _init.native_mode)
 if (args != null && (_init == null || !_init.program)) {
   _program = args[0]
   while (_j < length(args)) {
-    push(_user_args, args[_j])
+    _user_args[] = args[_j]
     _j = _j + 1
   }
   if (_init == null) {
@@ -945,7 +945,7 @@ $_.start = function start(cb, program) {
     no_warn: _no_warn,
   }
   greeters[id] = cb
-  push(message_queue, { startup })
+  message_queue[] = { startup }
 }
 
 $_.receiver = function receiver(fn) {
@@ -1470,7 +1470,7 @@ function populate_actor_addresses(obj, e) {
 
 
 function actor_prep(actor, send) {
-  push(message_queue, {actor,send});
+  message_queue[] = {actor,send};
 }
 
 // Send a message immediately without queuing