[Mimedefang] Cleaning up antivirus integration

[Damrose, Mark]

> -----Original Message-----
> From: Kevin A. McGrail

> I don't know about this.  Change is a pain but MD, like most 
> programs, 
> always has some growth vs. existing architecture issues. I'd 
> rather not have 
> a programmer hampered for something this major by having to keep the 
> existing API calls just for that sake.  

It would be pretty easy to do both.  Write a new OO Pluggable backend,
and in addition write wrapper functions that use the backend with the 
old default values.  

This would make it possible for an administrator to rewrite their filter
on their own schedule, and not put off upgrading.

I use clamd.