Changed type of "Sub_part" column in SHOW KEYS from TINYINT to SMALLINT (as MAX_KEY_LENGTH=1024)
(this is the final cset with proper tests)


mysql-test/r/show_check.result:
  Testcase for BUG#9439
mysql-test/t/show_check.test:
  Testcase for BUG#9439
sql/sql_show.cc:
  Fix for BUG#9439:
  Changed type of "Sub_part" column in SHOW KEYS from TINYINT to SMALLINT (as MAX_KEY_LENGTH=1024)