Post-merge fixes (code review fixes will follow)

include/my_base.h

@@ -146,7 +146,7 @@ enum ha_extra_function {
     On-the-fly switching between unique and non-unique key inserting.
   */
   HA_EXTRA_CHANGE_KEY_TO_UNIQUE,
-  HA_EXTRA_CHANGE_KEY_TO_DUP
+  HA_EXTRA_CHANGE_KEY_TO_DUP,
   /*
     When using HA_EXTRA_KEYREAD, overwrite only key member fields and keep 
     other fields intact. When this is off (by default) InnoDB will use memcpy

mysql-test/r/index_merge_ror_cpk.result

@@ -41,7 +41,7 @@ pk1	pk2	key1	key2	pktail1ok	pktail2ok	pktail3bad	pktail4bad	pktail5bad	pk2copy	b
 1	19	0	0	0	0	0	0	0	19	0	filler-data-19	filler2
 explain select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	intr(key1,key2)	4,4	NULL	1	Using where; Using index
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	4,4	NULL	1	Using where; Using index
 select pk1,pk2 from t1 where key1 = 10 and key2=10 and 2*pk1+1 < 2*96+1;
 pk1	pk2
 95	50
@@ -59,13 +59,13 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	key1	key1	4	const	101	Using where
 explain select * from t1 where pk1 < 7500 and key1 = 10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	PRIMARY,key1	intr(key1:PRIMARY)	4:4	NULL	38	Using where
+1	SIMPLE	t1	index_merge	PRIMARY,key1	key1,PRIMARY	4,4	NULL	38	Using where
 explain select * from t1 where pktail1ok=1 and key1=10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,pktail1ok	intr(key1,pktail1ok)	4,4	NULL	1	Using where
+1	SIMPLE	t1	index_merge	key1,pktail1ok	key1,pktail1ok	4,4	NULL	1	Using where
 explain select * from t1 where pktail2ok=1 and key1=10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,pktail2ok	intr(key1,pktail2ok)	4,4	NULL	1	Using where
+1	SIMPLE	t1	index_merge	key1,pktail2ok	key1,pktail2ok	4,4	NULL	1	Using where
 explain select * from t1 where pktail3bad=1 and key1=10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	key1,pktail3bad	pktail3bad	4	const	98	Using where
@@ -77,7 +77,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ref	key1,pktail5bad	pktail5bad	4	const	99	Using where
 explain select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	intr(key1,key2)	4,4	NULL	1	Using where; Using index
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	4,4	NULL	1	Using where; Using index
 select pk1,pk2,key1,key2 from t1 where key1 = 10 and key2=10 limit 10;
 pk1	pk2	key1	key2
 95	50	10	10

mysql-test/r/rowid_order_innodb.result

@@ -14,7 +14,7 @@ insert into t1 values (-5, 1, 1),
 (10, 1, 1);
 explain select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	4	Using where
+1	SIMPLE	t1	index_merge	key1,key2	key1,key2	5,5	NULL	6	Using where
 select * from t1 force index(key1, key2) where key1 < 3 or key2 < 3;
 pk1	key1	key2
 -100	1	1