update mysql schema upgrade files to use ENGINE= instead of TYPE= (closes #359)

schema/versions/mysql/51.sql

@@ -2,13 +2,13 @@ create table ttrss_labels2 (id integer not null primary key auto_increment,
 	owner_uid integer not null,
 	caption varchar(250) not null,
 	foreign key (owner_uid) references ttrss_users(id) ON DELETE CASCADE
-) TYPE=InnoDB;
+) ENGINE=InnoDB;
 
 create table ttrss_user_labels2 (label_id integer not null,
 	article_id integer not null,
 	foreign key (label_id) references ttrss_labels2(id) ON DELETE CASCADE,
 	foreign key (article_id) references ttrss_entries(id) ON DELETE CASCADE
-) TYPE=InnoDB;
+) ENGINE=InnoDB;
 
 insert into ttrss_filter_actions (id,name,description) values (7, 'label', 
 	'Assign label');