[syslog-ng]New syslog-ng.conf file

I had added a bit more to my every growing syslog-ng.conf file. I have re-added all the text on filtering. While it may not be the best text in the world, I have attempted to document how to properly use filtering. Perhaps some of this can end up in the user documentation to help everyone else. Any questions or comments, please let me know. Thanks. You can find the new version here: ftp://ftp.cataphract.com/syslog/syslog-ng/syslog-ng/syslog-ng-1.6.0rc1/s yslog-ng.conf Richard