Make innodb_plugin testsuite not to use IndexConditionPushdown or DS-MRR

(Otherwise we get different EXPLAINs for xtradb and innodb plugin).

mysql-test/suite/innodb_plugin/r/innodb.result

+set optimizer_switch='index_condition_pushdown=off';
+set @@optimizer_use_mrr=disable;
 drop table if exists t1,t2,t3,t4;
 drop database if exists mysqltest;
 create table t1 (id int unsigned not null auto_increment, code tinyint unsigned not null, name char(20) not null, primary key (id), key (code), unique (name)) engine=innodb;
@@ -1222,7 +1224,7 @@ count(*)
 623
 explain select * from t1 where c between 1 and 2500;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	c	c	5	NULL	#	Using index condition; Using MRR
+1	SIMPLE	t1	range	c	c	5	NULL	#	Using where
 update t1 set c=a;
 explain select * from t1 where c between 1 and 2500;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1916,7 +1918,7 @@ qq
 *a         *a*a         *
 explain select * from t1 where v='a';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	v,v_2	#	13	const	#	Using index condition
+1	SIMPLE	t1	ref	v,v_2	#	13	const	#	Using where
 select v,count(*) from t1 group by v limit 10;
 v	count(*)
 a
	1
@@ -2092,7 +2094,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	v	v	303	const	#	Using where; Using index
 explain select * from t1 where v='a';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref	v	v	303	const	#	Using index condition
+1	SIMPLE	t1	ref	v	v	303	const	#	Using where
 select v,count(*) from t1 group by v limit 10;
 v	count(*)
 a
	1
@@ -3239,3 +3241,5 @@ Variable_name	Value
 Handler_update	1
 Variable_name	Value
 Handler_delete	1
+set optimizer_switch='index_condition_pushdown=default';
+set @@optimizer_use_mrr=default;

mysql-test/suite/innodb_plugin/t/innodb.test

@@ -19,6 +19,9 @@ let $MYSQLD_DATADIR= `select @@datadir`;
 let collation=utf8_unicode_ci;
 --source include/have_collation.inc
 
+set optimizer_switch='index_condition_pushdown=off';
+set @@optimizer_use_mrr=disable;
+
 # Save the original values of some variables in order to be able to
 # estimate how much they have changed during the tests. Previously this
 # test assumed that e.g. rows_deleted is 0 here and after deleting 23
@@ -2543,6 +2546,9 @@ SET GLOBAL innodb_thread_concurrency = @innodb_thread_concurrency_orig;
 
 -- enable_query_log
 
+set optimizer_switch='index_condition_pushdown=default';
+set @@optimizer_use_mrr=default;
+
 #######################################################################
 #                                                                     #
 # Please, DO NOT TOUCH this file as well as the innodb.result file.   #