Removed more code for handling of PostgreSQL versions older than 8.2; use always "INSERT... RETURNING..." rather than "INSERT...; SELECT CURRVAL...". Thanks Christoph Pettus for the report and hints. Fixes #12180. Refs [16423].
Removed more code for handling of PostgreSQL versions older than 8.2; use always "INSERT... RETURNING..." rather than "INSERT...; SELECT CURRVAL...". Thanks Christoph Pettus for the report and hints. Fixes #12180. Refs [16423].

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@16443 bcc190cf-cafb-0310-a4f2-bffc1f526a37

disqus/django-old,disqus/django-old,disqus/django-old