Added two status variables:
binlog_cache_use - counts number of transactions that used somehow
transaction temporary binary log.
binlog_cache_disk_use - counts number of transactions that required
disk I/O for storing info in this this binary log.
This is because rpl_relayrotate.test uses InnoDB.
Example of a failing sequence:
rpl_relayrotate.test repl_user_variables.test rpl_relayrotate.test
Explaination in the files.
Btw all other tests which use InnoDB (innodb*.test) already have this final
DROP TABLE.
Removed a wrong comment of mine.