Cleanup
ha_innodb.cc, data0type.h:
  Make sure non-latin1 users can downgrade from 4.0.14 to an earlier version if they have not created DATA_BLOB column prefix indexes


innobase/include/data0type.h:
  Make sure non-latin1 users can downgrade from 4.0.14 to an earlier version if they have not created DATA_BLOB column prefix indexes
sql/ha_innodb.cc:
  Make sure non-latin1 users can downgrade from 4.0.14 to an earlier version if they have not created DATA_BLOB column prefix indexes
innobase/include/dict0dict.ic:
  Cleanup
innobase/row/row0mysql.c:
  Cleanup