Add reminder to update copyright in sgml file.

src/tools/RELEASE_CHANGES

@@ -33,9 +33,6 @@
 
 * Update pg_upgrade to handle new version, or disable
 
-* Update copyright year when needed
-    doc/src/sgml/legal.sgml will also need to be updated
-
 
 ---------------------------------------------------------------------------
 

src/tools/copyright

@@ -2,3 +2,6 @@ rgrepc -l 'Copyright.*PostgreSQL Global Development Group' | while read FILE
 do
 	pipe sed 's/^\(.*Copyright (c) [12][0-9][0-9][0-9]-\)[12][0-9][0-9][0-9]\(, PostgreSQL Global Development Group.*\)$/\12004\2/' $FILE
 done
+
+echo "Manually update doc/src/sgml/legal.sgml too" 1>&2
+