Log Message:
MIMEDefang 2.73-BETA-1:

* Make configure.in check whether or not libmilter requires -lldap.

* Fix Graphdefang to handle new md_syslog output style.

* Always check return code from chdir() in mimedefang.pl.  In
  certain cases on large and heavily-loaded serversm, if the chdir()
  failed MIMEDefang would end up working in the wrong directory with
  attendant chaos.

* Add "-G" option to mimedefang and mimedefang-multiplexor.  This
  makes their sockets group-readable and group-writable.

* Pass along the client port number, server IP address and server port
  number to all filter functions.  This feature was sponsored by Scayl.