[Zope] logging for virtual hosts

[zope@concision.com]

We are using SiteAccess to have multiple virtual hosts on one Zope
Server. We would like to provide our customers with stats reports
based on the zope log. But entries in the log don't contain any
distinguishing information about the virtual host to which the entry
applies. Short of hacking zope, is there a way to modify our zope
environment to to have the requested hostname included in the log
entry?

We know that we can use PCGI thru apache and have apache do the
logging. But I'm hoping to avoid that.