Bug #17705 "FT Index corruption occurs with UTF8 data..."
(Actually, the bug had nothing to do with FT index but with general key compression)



myisam/mi_search.c:
  Fix error in prefix compression of keys in MyISAM when key length changed from 254 -> 255
mysql-test/r/ctype_utf8.result:
  Test of fix for key compression bug
mysql-test/t/ctype_utf8.test:
  Test of fix for key compression bug