Unfortunately we store the state of models as simply model, so if there's ever
duplicate model names, we're somewhat screwed, but this makes the (previously
unmanageably huge) menu usable, while retaining the "model name as global
identifier" state unmodified.
We are now well past the point where something smarter needs to be figured out for that selector...
git-svn-id: svn://localhost/ardour2/branches/3.0@14095 d708f5d6-7413-0410-9779-e7cbd77b26cf