Log Message:
Reimported net/pureftpd as net/pure-ftpd to make it more consistent.

Updated to version 1.0.15.
Addresses PR pkg/21941 by Jon Olsson.

Changes:

- buildlink2-ify
- added PostgreSQL support (PURE_FTPD_USE_PGSQL)
- fixed MySQL support (missing bsd.prefs.mk include)

1.0.15:
=======
- A turkish translation has been added. Thanks to Mehmet Cokcevik
  <dns@netline.com.tr> .
- Various functional and portability fixes have been made to the
  handling of upload scripts, to the pure-pw command and to the
  automatic creation of home directories.
- Accounts in a puredb database can now be quickly listed ("pure-pw
  list").
- The anonymous FTP directory can now be overriden on the Windows
  port (using a WIN32_ANON_DIR environment variable).
- The default banner has been stripped down to look more
  professionnal (ie. boring).
- Transfer speed on BSD systems has been improved.
- The license of the whole package has changed from GPL to a simplified
  BSD license.