Fallback to row-wise delete if number or rows in the table is unknown


mysql-test/r/csv.result:
  BUG#13406 - incorrect amount of "records deleted"
mysql-test/t/csv.test:
  BUG#13406 - incorrect amount of "records deleted"
sql/examples/ha_tina.cc:
  BUG#13406 - incorrect amount of "records deleted".
  Fallback to row-wise delete if number or rows in the table is unknown
sql/examples/ha_tina.h:
  BUG#13406 - incorrect amount of "records deleted".
  Fallback to row-wise delete if number or rows in the table is unknown