Re: Documentation: references to old versions

While reading some documentation, I noticed that we have references to
past releases. For example,
http://www.postgresql.org/docs/9.2/static/xfunc-c.html mentions "A
magic block is required as of PostgreSQL 8.2". Sure, this is true even
as of 9.2 or even 9.3. There are a few more such references that I
could spot with a simple grep in the doc/src/sgml directory. I wonder
if this is worth fixing. I don't know sgml enough, but if it supports
some sort of a meta-tag, then it might help to replace specific
version references with something like <CURRENT_MAJOR_RELEASE> so that
the current major version gets substituted when docs for that release
are built.