produces invalid query results

mi_key.c:
  well_formed_length should be executed before space trimming, not after.
ctype_utf8.test:
ctype_utf8.result:
  adding test.


myisam/mi_key.c:
  Bug#10253: ompound index length and utf8 char set produces invalid query results
  well_formed_length should be executed before space trimming, not after.
mysql-test/r/ctype_utf8.result:
  adding test.
  adding test.
mysql-test/t/ctype_utf8.test:
  adding test.