correction test suite to be correct with spatial indexes hack

mysql-test/r/myisam.result:
  prevent determination this index as spatial (due to spatial index determination hack (first dig 'S'))
mysql-test/t/myisam.test:
  prevent determination this index as spatial (due to spatial index determination hack (first dig 'S'))

mysql-test/r/myisam.result

 drop table if exists t1;
 CREATE TABLE t1 (
 STRING_DATA char(255) default NULL,
-KEY STRING_DATA (STRING_DATA)
+KEY string_data (STRING_DATA)
 ) TYPE=MyISAM;
 INSERT INTO t1 VALUES ('AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA');
 INSERT INTO t1 VALUES ('DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD');

mysql-test/t/myisam.test

@@ -5,7 +5,7 @@
 drop table if exists t1;
 CREATE TABLE t1 (
   STRING_DATA char(255) default NULL,
-  KEY STRING_DATA (STRING_DATA)
+  KEY string_data (STRING_DATA)
 ) TYPE=MyISAM;
 
 INSERT INTO t1 VALUES ('AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA');