rpl000014.test	fixed bug in testcase
rename.test	fixed cleanup problem
handler.cc	added a comment
sql_class.h	fixed bug in active_transaction() when MySQL was not compiled with transaction support


mysql-test/t/rename.test:
  fixed cleanup problem
mysql-test/t/rpl000014.test:
  fixed bug in testcase
mysql-test/t/show_check.test:
  fixed cleanup problem
sql/handler.cc:
  added a comment
sql/sql_class.h:
  fixed bug in active_transaction() when MySQL was not compiled with transaction support