Re-add dblink_current_query() for backward compatibility.

contrib/dblink/dblink.sql.in

-/* $PostgreSQL: pgsql/contrib/dblink/dblink.sql.in,v 1.15 2008/04/04 16:57:21 momjian Exp $ */
+/* $PostgreSQL: pgsql/contrib/dblink/dblink.sql.in,v 1.16 2008/04/05 02:26:14 momjian Exp $ */
 
 -- Adjust this setting to control where the objects get created.
 SET search_path = public;
@@ -163,6 +163,11 @@ RETURNS text
 AS 'MODULE_PATHNAME','dblink_build_sql_update'
 LANGUAGE C STRICT;
 
+CREATE OR REPLACE FUNCTION dblink_current_query ()
+RETURNS text
+AS 'SELECT current_query()'
+LANGUAGE SQL;
+
 CREATE OR REPLACE FUNCTION dblink_send_query(text, text)
 RETURNS int4
 AS 'MODULE_PATHNAME', 'dblink_send_query'

contrib/dblink/uninstall_dblink.sql

-/* $PostgreSQL: pgsql/contrib/dblink/uninstall_dblink.sql,v 1.6 2008/04/04 16:57:21 momjian Exp $ */
+/* $PostgreSQL: pgsql/contrib/dblink/uninstall_dblink.sql,v 1.7 2008/04/05 02:26:14 momjian Exp $ */
 
 -- Adjust this setting to control where the objects get dropped.
 SET search_path = public;
 
+DROP FUNCTION dblink_current_query ();
+
 DROP FUNCTION dblink_build_sql_update (text, int2vector, int4, _text, _text);
 
 DROP FUNCTION dblink_build_sql_delete (text, int2vector, int4, _text);