Added new mail related rules:
  - mail/cyrus.xml for Cyrus imap/pop3 server
  - mail/postfix.xml for Postfix smtp
Added a new more comprehensive bind9 pattern set:
  - dns/named.xml
Moved new patterns into application specific directories.
Added new openssh patterns.
  - applications/openssh/sshd.xml
Removed application specific patterns from the original dirs.
Added a sample for Microsoft IIS web server.
Added Microsoft DNS server debug log patterns.
Added basic Microsoft Windows 2008 server messages. This uses the format
sent by the BalaBit syslog-ng agent.