Post-merge fixes.

storage/myisam/mi_create.c:
  Post-merge fixes (Thanks Ingo).

mysql-test/r/federated.result

@@ -1603,22 +1603,6 @@ fld_cid	fld_name	fld_parentid	fld_delt
 5	Torkel	0	0
 DROP TABLE federated.t1;
 DROP TABLE federated.bug_17377_table;
-create table t1 (id int not null auto_increment primary key, val int);
-create table t1
-(id int not null auto_increment primary key, val int) engine=federated
-connection='mysql://root@127.0.0.1:SLAVE_PORT/test/t1';
-insert into t1 values (1,0),(2,0);
-update t1 set val = NULL where id = 1;
-select * from t1;
-id	val
-1	NULL
-2	0
-select * from t1;
-id	val
-1	NULL
-2	0
-drop table t1;
-drop table t1;
 drop table if exists federated.t1;
 create table federated.t1 (a int, b int, c int);
 drop table if exists federated.t1;
@@ -1733,6 +1717,23 @@ id	c1	c2
 9	abc	ppc
 drop table federated.t1, federated.t2;
 drop table federated.t1, federated.t2;
+create table t1 (id int not null auto_increment primary key, val int);
+create table t1
+(id int not null auto_increment primary key, val int) engine=federated
+connection='mysql://root@127.0.0.1:SLAVE_PORT/test/t1';
+insert into t1 values (1,0),(2,0);
+update t1 set val = NULL where id = 1;
+select * from t1;
+id	val
+1	NULL
+2	0
+select * from t1;
+id	val
+1	NULL
+2	0
+drop table t1;
+drop table t1;
+End of 5.0 tests
 DROP TABLE IF EXISTS federated.t1;
 DROP DATABASE IF EXISTS federated;
 DROP TABLE IF EXISTS federated.t1;

mysql-test/r/myisam.result

@@ -1436,12 +1436,6 @@ show keys from t1;
 Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
 t1	1	a	1	a	A	8	NULL	NULL	YES	BTREE	
 drop table t1;
-create table t1 (c1 int) engine=myisam pack_keys=0;
-create table t2 (c1 int) engine=myisam pack_keys=1;
-create table t3 (c1 int) engine=myisam pack_keys=default;
-create table t4 (c1 int) engine=myisam pack_keys=2;
-ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '2' at line 1
-drop table t1, t2, t3;
 show create table t1;
 show create table t1;
 create table t1 (a int) engine=myisam select 42 a;
@@ -1455,6 +1449,14 @@ select * from t1;
 a
 42
 drop table t1;
+End of 4.1 tests
+create table t1 (c1 int) engine=myisam pack_keys=0;
+create table t2 (c1 int) engine=myisam pack_keys=1;
+create table t3 (c1 int) engine=myisam pack_keys=default;
+create table t4 (c1 int) engine=myisam pack_keys=2;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '2' at line 1
+drop table t1, t2, t3;
+End of 5.0 tests
 create table t1 (a int not null, key `a` (a) key_block_size=1024);
 show create table t1;
 Table	Create Table
@@ -1601,3 +1603,4 @@ create table t1 (a int not null, key key_block_size=1024 (a));
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '=1024 (a))' at line 1
 create table t1 (a int not null, key `a` key_block_size=1024 (a));
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'key_block_size=1024 (a))' at line 1
+End of 5.1 tests

storage/myisam/mi_create.c

@@ -581,8 +581,7 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
       if ((path= strrchr(ci->index_file_name, FN_LIBCHAR)))
         *path= '\0';
       fn_format(filename, name, ci->index_file_name, MI_NAME_IEXT,
-                MY_REPLACE_DIR | MY_UNPACK_FILENAME |
-                (have_iext ? MY_REPLACE_EXT : MY_APPEND_EXT));
+                MY_REPLACE_DIR | MY_UNPACK_FILENAME | MY_APPEND_EXT);
     }
     else
     {
@@ -659,8 +658,7 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
           if ((path= strrchr(ci->data_file_name, FN_LIBCHAR)))
             *path= '\0';
           fn_format(filename, name, ci->data_file_name, MI_NAME_DEXT,
-                    MY_REPLACE_DIR | MY_UNPACK_FILENAME |
-                    (have_dext ? MY_REPLACE_EXT : MY_APPEND_EXT));
+                    MY_REPLACE_DIR | MY_UNPACK_FILENAME | MY_APPEND_EXT);
         }
         else
         {