Update regress tests for new LIMIT x,y behavior.

src/test/regress/expected/limit.out

@@ -98,7 +98,7 @@ SELECT ''::text AS five, unique1, unique2, stringu1
 
 SELECT ''::text AS five, unique1, unique2, stringu1 
 		FROM onek
-		ORDER BY unique1 LIMIT 5, 900;
+		ORDER BY unique1 LIMIT 900, 5;
  five | unique1 | unique2 | stringu1 
 ------+---------+---------+----------
       |     900 |     913 | QIAAAA

src/test/regress/sql/limit.sql

@@ -29,4 +29,4 @@ SELECT ''::text AS five, unique1, unique2, stringu1
 		ORDER BY unique1 OFFSET 990 LIMIT 5;
 SELECT ''::text AS five, unique1, unique2, stringu1 
 		FROM onek
-		ORDER BY unique1 LIMIT 5, 900;
+		ORDER BY unique1 LIMIT 900, 5;