Log Message:
Update to 1.0.17a

Changes:

* Version 1.0.17a:

 + An old standing issue has been fixed : ungracefully aborted transfers
   caused the session to exit without removing ftpwho entry and atomic
   files. This fix also speeds up ftpwho and peruserlimit.

* Version 1.0.17:

 + The SSL certificate file can now be changed through a new configuration
   switch, --with-certfile. It doesn't depend on sysconfdir any more and it
   defaults to the original location : /etc/ssl/private/pure-ftpd.pem.
 + Shadowed NIS accounts and MacOS X Panther system accounts are now
   processed by the pure-pwconvert tool.
 + The server doesn't reject users any more on Linux when capabilities are
   used.
 + The documentation has been improved (man pages, README, FAQ, typos).
 + Optimizations have been made.
 + SO_REUSEPORT is now used on FreeBSD to always bind the ftp-data port.
 + SSL-related error messages are now more explicit.
 + The SITE TIME command has been implemented.
 + The sample PAM configuration file has been rewritten.
 + A logfile parser has been added to the contribs.
 + MacOS X Panther specific instructions have been added.
 + Upload is now atomic. A file is uploaded with a temporary name and it
   gets its final name only once the upload has been completed. If a file
   already exists with the same name, the content can be preserved until the
   new content has been fully transfered (using the new --notruncate run-time
    switch).
   Web servers will no more serve partially transfered files during uploads.
   The new handling of uploads also limits the races in virtual quota
   handling.

* Version 1.0.16c:

 + The PAM backend and the CGI mode were accidentally broken in version
   1.0.16b. This version fixes both issues.
 + The Norwegian translation has been updated.

* Version 1.0.16b:

 + The server now properly compiles with SSL/TLS on RedHat 9 systems.
 + pure-ftpwho now outputs nice-looking XHTML 1.1 conformant code, an XSS
   issue has been fixed and the local host name is now properly displayed in
   verbose mode.
 + The path to SSL certificates now follows the --sysconfdir prefix.
 + Minor optimizations have been made.
 + IPv4 and IPv6 addresses will now listen for connections even
   without the -4 switch on NetBSD and FreeBSD.