Add release notes for 8.5alpha1

doc/src/sgml/filelist.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/filelist.sgml,v 1.62 2009/07/14 22:16:38 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/filelist.sgml,v 1.63 2009/08/17 22:14:44 petere Exp $ -->
 
 <!entity history    SYSTEM "history.sgml">
 <!entity info       SYSTEM "info.sgml">
@@ -140,6 +140,7 @@
 <!entity keywords   SYSTEM "keywords.sgml">
 
 <!entity release    SYSTEM "release.sgml">
+<!entity release-8.5    SYSTEM "release-8.5.sgml">
 <!entity release-8.4    SYSTEM "release-8.4.sgml">
 <!entity release-8.3    SYSTEM "release-8.3.sgml">
 <!entity release-8.2    SYSTEM "release-8.2.sgml">

doc/src/sgml/release.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.633 2009/05/02 20:17:19 tgl Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.634 2009/08/17 22:14:44 petere Exp $ -->
 <!--
 
 Typical markup:
@@ -70,6 +70,7 @@ can be created without links to the main documentation.
   The reason for splitting the release notes this way is so that appropriate
   subsets can easily be copied into back branches.
 -->
+&release-8.5;
 &release-8.4;
 &release-8.3;
 &release-8.2;