PG 7.3 is five years old today

By chance I happened to notice in the release notes

Release 7.3
Release date: 2002-11-27

Man, it feels like a long time since that came out...

There has been some discussion of making a project policy of dropping
support for old releases after five years.  Should we consider formally
instituting that?

I see that there are two or three minor bug fixes in the REL7_3_STABLE
branch since 7.3.20.  Rather than just leaving those to rot, maybe the
actual policy should be "only one more update after 8.3 comes out".

Comments, opinions?
        regards, tom lane