Following four test-cases of binlog suite are failing due to improper cleanup,
as these do not remove the saved binlog files which were created on the fly
during the execution of the test-cases:
- binlog_bug36391
- binlog_tmp_table
- binlog_checksum
- binlog_mysqlbinlog-cp932

Fix:
Test-cases now do proper cleaning by removing the saved binlog files in the
cleanup section.