MySQL 5.1.38 after-merge fixes.

Fix some mistakes in the original merge found during review.

mysql-test/include/concurrent.inc:
  Add missing lines mistakenly omitted in merge.
mysql-test/include/mix1.inc:
  Revert wrong change done during merge.
mysql-test/include/wait_for_status_var.inc.moved:
  Remove file which was accidentally not removed during conflict resolution in merge.
mysql-test/r/innodb_mysql.result:
  Revert result file change following fixing root problem in merge.

mysql-test/include/concurrent.inc

@@ -666,7 +666,9 @@ disconnect thread1;
 --echo ** connection thread2
 connection thread2;
 disconnect thread2;
+--source include/wait_until_disconnected.inc
 --echo ** connection default
 connection default;
 drop table t1;
 drop user mysqltest@localhost;
+

mysql-test/include/mix1.inc

@@ -1509,6 +1509,7 @@ DROP TABLE t1;
 --echo #             SQL_SELECT::test_quick_select
 --echo #             (reproduced only with InnoDB tables)
 --echo #
+
 eval
 CREATE TABLE t1 (c1 INT, c2 INT, c3 INT, KEY (c3), KEY (c2, c3))
   ENGINE=$engine_type;
@@ -1538,7 +1539,7 @@ DROP TABLE t1;
 eval
 CREATE TABLE t1 (c1 DECIMAL(12,2), c2 DECIMAL(12,2), c3 DECIMAL(12,2), 
   KEY (c3), KEY (c2, c3))
-  ENGINE=innodb;
+  ENGINE=$engine_type;
 INSERT INTO t1 VALUES (1,1,1), (1,1,1), (1,1,2), (1,1,1), (1,1,2);
 
 SELECT 1 FROM (SELECT COUNT(DISTINCT c1) 

mysql-test/include/wait_for_status_var.inc.moved

-# ==== Purpose ====
-#
-# Waits until a variable from SHOW STATUS has returned a specified 
-# value, or until a timeout is reached.
-#
-# ==== Usage ====
-#
-# let $status_var= Threads_connected;
-# let $status_var_value= 1;
-# --source include/wait_for_status_var.inc
-#
-# Parameters:
-#
-# $status_var, $status_var_value
-#   This macro will wait until the variable of SHOW STATUS 
-#   named $status_var gets the value $status_var_value.  See
-#   the example above.
-# 
-# $status_type= GLOBAL|SESSION
-#   To specify the type (attribute) of status variable and
-#   run either SHOW GLOBAL STATUS or SHOW SESSION STATUS.
-# 
-# $status_var_comparsion
-#   By default, this file waits until $status_var becomes equal to
-#   $status_var_value.  If you want to wait until $status_var
-#   becomes *unequal* to $status_var_value, set this parameter to the
-#   string '!=', like this:
-#     let $status_var_comparsion= !=;
-#
-# $status_timeout
-#   The default timeout is 1 minute. You can change the timeout by
-#   setting $status_timeout. The unit is tenths of seconds.
-#
-
-if (`SELECT STRCMP('$status_type', '') * STRCMP(UPPER('$status_type'), 'SESSION') * STRCMP(UPPER('$status_type'), 'GLOBAL')`)
-{
-  --echo **** ERROR: Unknown type of variable status_type: allowed values are: SESSION or GLOBAL ****
-  exit;
-}
-
-let $_status_timeout_counter= $status_timeout;
-if (!$_status_timeout_counter)
-{
-  let $_status_timeout_counter= 600;
-}
-
-let $_status_var_comparsion= $status_var_comparsion;
-if (`SELECT '$_status_var_comparsion' = ''`)
-{
-  let $_status_var_comparsion= =;
-}
-
-let $_show_status_value= query_get_value("SHOW $status_type STATUS LIKE '$status_var'", Value, 1);
-while (`SELECT NOT('$_show_status_value' $_status_var_comparsion '$status_var_value')`)
-{
-  if (!$_status_timeout_counter)
-  {
-    --echo **** ERROR: failed while waiting for $status_type $status_var $_status_var_comparison $status_var_value ****
-    --echo Note: the following output may have changed since the failure was detected
-    --echo **** Showing STATUS, PROCESSLIST ****
-    eval SHOW $status_type STATUS LIKE '$status_var';
-    SHOW PROCESSLIST;
-    exit;
-  }
-  dec $_status_timeout_counter;
-  sleep 0.1;
-  let $_show_status_value= query_get_value("SHOW $status_type STATUS LIKE '$status_var'", Value, 1);
-}

mysql-test/r/innodb_mysql.result

@@ -1746,7 +1746,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 DROP TABLE t1;
 CREATE TABLE t1 (c1 DECIMAL(12,2), c2 DECIMAL(12,2), c3 DECIMAL(12,2), 
 KEY (c3), KEY (c2, c3))
-ENGINE=innodb;
+ENGINE=InnoDB;
 INSERT INTO t1 VALUES (1,1,1), (1,1,1), (1,1,2), (1,1,1), (1,1,2);
 SELECT 1 FROM (SELECT COUNT(DISTINCT c1) 
 FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;