IGNORE/USE INDEX now work with HA_EXTRA_KEYREAD

BitKeeper/etc/ignore:
  Added depcomp to the ignore list

.bzrignore

@@ -321,3 +321,4 @@ sql-bench/innotest1b
 sql-bench/innotest2
 sql-bench/innotest2a
 sql-bench/innotest2b
+depcomp

mysql-test/r/select.result

@@ -94,9 +94,9 @@ fld3
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t2	ref	fld3	fld3	30	const	1	where used; Using index
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	index	fld3	fld3	30	NULL	1199	where used; Using index
+t2	ALL	fld3	NULL	NULL	NULL	1199	where used
 table	type	possible_keys	key	key_len	ref	rows	Extra
-t2	index	fld3	fld3	30	NULL	1199	where used; Using index
+t2	ALL	fld3	NULL	NULL	NULL	1199	where used
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t2	ref	fld3	fld3	30	const	1	where used; Using index
 table	type	possible_keys	key	key_len	ref	rows	Extra

sql/sql_base.cc

@@ -1834,6 +1834,7 @@ bool setup_tables(TABLE_LIST *tables)
 	DBUG_RETURN(1);
       table->table->keys_in_use_for_query &= ~map;
     }
+    table->table->used_keys &= table->table->keys_in_use_for_query;
   }
   if (tablenr > MAX_TABLES)
   {