* Major code cleanup.
* "User unknown" reports complete local address, including extensions.
* Only run courierfilters after all control files are closed.
* "opt BOFHHEADERLIMIT" replaces hardcoded limit of 100,000 bytes of
headers per message.
* Reject <@domain.com> for a recipient's address.
* Tolerate newline-less responses from the filter.
* Document that sysexit 100 from .courier is a permanent failure.
* "courier show all" and "courier clear all" commands for managing
backscatter suppression list.
+ Drop the uucp module from the default option set.
+ Patch the webmlm sources to not use "stdin" and "stdout" as function or
member names as they can be macros according to the C standards.
* webadmin: Remove check that prevents multiple virtual domains to
be aliased to the same account.
* webmlmd: new CGI module that can manage a Courier mailing list
created with couriermlm.
* Rewrite and code cleanup of couriermlm.
* Use domain name, not MX hostname, for looking up authenticated
SMTP passwords in esmtpauthclient
