Log Message:
Update awstats to 6.6.

Major changes since 6.4:
- Fixed CVE-2006-2237.
- All geoip plugins support the PurePerl version.
- Possible use of vhost in extra section.
- Support IPv6 in AllowAccessFromWebToFollowingIPAddresses parameter.
- Added svn family to browsers detection.
- RSS catcher/readers in robot database.
- LogFormat=2 can now change its value dynamically if logformat change.
- More new features and bug fixes.