[Zope] Shared zope.config file.

[Karl Kopper]

Running Zope-2.7.0-b4 on Linux using an NFS shared instance home, I'd like
to share one config file on multiple Zope servers.

Can I use a %define or something to create a `/bin/hostname` variable inside
of the zope.conf so the lock, log, etc. files are unique?

--Karl