majalan, om-shell

Copperbox revision 2952.

Initial work separating Zak port configuration from Events - rather than having Zak port numbers as final arguments to events I'd like to encapsulate them in a configuration so I won't have to modify each event in the score if the configuration changes.

The work so far is a bit off the mark, I haven't yet worked out a good representation for the static Zak config.