proper max_records estimation for sort-repair of fulltext indexes

mysql-test/t/ctype_utf8.test:
  bad merge fixed

mysql-test/t/ctype_utf8.test

@@ -645,6 +645,7 @@ insert into t1 values(1,'foo'),(2,'foobar');
 select * from t1 where b like 'foob%';
 --disable_warnings
 alter table t1 engine=bdb;
+--enable_warnings
 select * from t1 where b like 'foob%';
 drop table t1;
 

mysql-test/t/fulltext.test

@@ -253,9 +253,16 @@ select * from t1 join t2 using(`t1_id`) where match (t1.name, t2.name) against('
 # bug with many short (< ft_min_word_len) words in boolean search
 #
 select * from t2 where match name against ('a* b* c* d* e* f*' in boolean mode);
-
 drop table t1,t2;
 
+#
+# bug with repair-by-sort and incorrect records estimation
+#
+
+create table t1 (a text, fulltext key (a));
+insert into t1 select "xxxx yyyy zzzz";
+drop table t1;
+
 #
 # UTF8
 #