mysql-test/r/events.result:
  update result
mysql-test/r/events_bugs.result:
  update result
mysql-test/t/events.test:
  - use information_schema.processlist
  - move from error codes to constants
mysql-test/t/events_bugs.test:
  fix for bug #17578: Test "events" fails due to scheduling difference
  use information_schema.processlist