Update release notes for releases 9.0.4, 8.4.8, 8.3.15, and 8.2.21.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 8587c7e5926de8f5a4b8dc894a46651ca8e0dfb4
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2011-04-14T19:51:45Z
Releases: 8.4.8
Update release notes for releases 9.0.4, 8.4.8, 8.3.15, and 8.2.21.

Files

PathChange+/−
doc/src/sgml/release-8.2.sgml modified +153 −21
doc/src/sgml/release-8.3.sgml modified +178 −15
doc/src/sgml/release-8.4.sgml modified +256 −8