Log Message:
Uddate databases/pgbouncer to 1.6.1.
Update home page & master site, clean up.

PgBouncer 1.6.1.

- Security fix for CVE-2015-6817.
- Per-pool pooling mode vs. reset query.

Details:
  http://pgbouncer.github.io/2015/09/pgbouncer-1-6-1/

PgBouncer 1.6.0

Main new features:
- Load user password hash from postgres database.
- Pooling mode can be configured both per-database and per-user.
- Per-database and per-user connection limits: max_db_connections and
  max_user_connections.
- Add DISABLE/ENABLE commands to prevent new connections.
- New preferred DNS backend: c-ares.
- Config files have %include FILENAME directive to allow configuration
  to be split into several files.

Details:
  http://pgbouncer.github.io/2015/08/pgbouncer-1-6/

PgBouncer 1.5.5

- Fix remote crash - invalid packet order causes lookup of NULL pointer.
  Not exploitable, just DoS.