filter-syslog 1.19

A user reported that filter-syslog was unable to properly parse OpenBSD syslog messages for forwarded log messages (ones received from the network). After a few false starts, I added proper parsing of those. In testing, I also discovered that the current code didn't handle another variation on the startup message of the Linux syslogd we use on Debian, so I fixed that as well.

You can get the latest version from the filter-syslog distribution page. It now requires Perl 5.6 or higher, since I wanted to use qr// for the regexes.