pwebstats: common log format

Lines from a log file in Common Log Format will look like this:

host rfc931 authuser [DD/Mon/YYYY:hh:mm:ss] "request" ddd bbbb

• host: Either the DNS name or the IP number of the remote client
• rfc931: Any information returned by identd for this person, - otherwise.
• authuser: If user sent a userid for authentication, the user name, - otherwise.
• Day
• Mon: Month (calendar name)
• YYYY: Year
• hh: hour (24-hour format, the machine's timezone)
• mm: minutes
• ss: seconds
• request: The first line of the HTTP request as sent by the client.
• ddd: the status code returned by the server, - if not available.
• bbbb: the total number of bytes sent, *not including the HTTP header*, - if available