[Zope] MailDropHost on windows

[Erik Myllymaki]

I'm trying to get MailDropHost running under windows, but it errors with:

Traceback (most recent call last):
   File ".\maildrop.py", line 296, in ?
     pid = os.fork()
AttributeError: 'module' object has no attribute 'fork'

Altering it to run without threading seems to work quite well.