Upgrade to 2.4 of CometD.
I'm not sure I understand - does cometd 2.4 support AMD loading, because from what I can tell, it doesn't. v2.5 (in beta as far as I can tell) will support AMD loading.
Looks like 2.5.0 is released, so I will work on this soon.
This was done in cebabf0. After it has been reviewed/tested, this can be closed.
Incorporated into v8.3.1