filter-syslog 1.17

I added support in the configuration file to include other configuration files or a full directory of configuration files, something I'd been planning on doing for some time. Since it looks like we're going to keep using filter-syslog for the time being (I'd like to move to logwatch, but it doesn't quite do the right things), I may as well make it easier to configure.

In preparation for Debian packaging, I also taught it to look for /etc/filter-syslog.conf by default, check both /etc and /etc/leland for configuration files, and search for sendmail in /usr/sbin.

You can get the latest version from the filter-syslog distribution page.