Update 9.3 release notes.

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

Commit: f49f8de074c37d7af5441f79e5569b9e463d0b09
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2013-09-01T03:53:24Z
Releases: 9.4.0
Update 9.3 release notes.

Some corrections, a lot of copy-editing.

Set projected release date as 2013-09-09.

Files

PathChange+/−
doc/src/sgml/release-9.3.sgml modified +417 −295