Tokutek/mysql56#71 run mysql suite tokudb.add_index without tokudb as the...

Tokutek/mysql56#71 run mysql suite tokudb.add_index without tokudb as the default storage engine (fix hot_create_unique_index.result)

mysql-test/suite/tokudb.add_index/r/hot_create_unique_index.result

+set default_storage_engine='tokudb';
 drop table if exists t;
 create table t (id int auto_increment primary key, x int);
 create unique index x on t (x);