Disable pg_upgrade for 7.3.

contrib/pg_upgrade/README

                                  pg_upgrade
 
-This is a version of pg_upgrade which will migrate a 7.1 database to
-7.2, or allow a 7.2 to 7.2 migration if you need to perform an initdb. 
-It has been only lightly tested.  Please report any problems to the
-PostgreSQL lists.
+
+PG_UPGRADE IS NOT AVAILABLE FOR UPGRADES FROM 7.2.X.
+
+This is a version of pg_upgrade which will allow a 7.3 to 7.3 migration
+if you need to perform an initdb.  It has been only lightly tested. 
+Please report any problems to the PostgreSQL lists.
 
 Read the manual page for more information.  To view it:
 
@@ -11,4 +13,4 @@ Read the manual page for more information.  To view it:
 
 Bruce Momjian
 
-2002-01-14
+2002-07-03

contrib/pg_upgrade/pg_upgrade

@@ -3,7 +3,7 @@
 # pg_upgrade: update a database without needing a full dump/reload cycle.
 # CAUTION: Read the manual page before trying to use this!
 
-# $Header: /cvsroot/pgsql/contrib/pg_upgrade/Attic/pg_upgrade,v 1.13 2002/04/09 18:07:24 momjian Exp $
+# $Header: /cvsroot/pgsql/contrib/pg_upgrade/Attic/pg_upgrade,v 1.14 2002/07/03 14:38:19 momjian Exp $
 #
 # To migrate this to newer versions of PostgreSQL:  
 #	1)  Update the version numbers at the top of the file
@@ -14,7 +14,7 @@
 #set -x
 
 # UPGRADE_VERSION is the expected old database version
-UPGRADE_VERSION="7.2"
+UPGRADE_VERSION="7.3"
 CUR_VERSION="7.3"
 
 # Set this to "Y" to enable this program