BTW, I notice that http://www.postgresql.org/docs/techdocs.52
points for "release notes" to
http://www.postgresql.org/docs/8.1/static/release.html, which
is not up to date.
A quick fix is to point to devel docs instead:
http://developer.postgresql.org/docs/postgres/release.html
Someone should update the website copies of the docs, but I dunno
when that will happen.
regards, tom lane