Enumerate registered codecs

["Martin v. Löwis"]

Paul Watson wrote:
> The primary identifier and a descriptive string (localized) need to be 
> available at a minimum.  Having aliases would be a plus.

You will have to implement your own list. Getting the well-known aliases
is possible through encodings.aliases, but a localized descriptive
string was never part of the design - this is something the application
will have to provide.

Regards,
Martin