New support for clamd

[Ryan Lane]

The new support for clamd is most excellent!  I run a fairly busy 
server, and the processing times are significantly better.  I just 
implemented the change this morning, and I immediately saw the benefit. 
  The load on the server is considerably better too.  Down from an 
almost constant 1.00+ load average to 0.20  Thanks for the great work, 
and continual improvements.

-Ryan