this is indeed a change of concept.
A 'command instance' can not be found through the official
Command front-end anymore, since we do not create a registration.
This allows us to avoid decorating command IDs with running counters
interesting new twist: we do not even need to decorate with a running number,
since we'll get away with an anonymous command instance, thanks to Command
being a smart-handle
The point in question is how to manage these definitions in practice,
since we're about to create a huge lot of them eventually. The solution
attempted here is heavily inspired by the boost-test framework
