an old item: es-americas

[Jeremy Carroll]

> If RFC 3066 bis allows the use of M49 codes for a region, it needs to
> specify what happens if that region subsequently gets an ISO 3166 code.
> 

Couldn't we just list it in the IANA registry as deprecated, like i-klingon?
OK this may happen but not frequently, and we already have mechanisms for 
two tags for the same language. It is not a disaster like having two 
languages for the same tag.

Jeremy