storage/ndb/src/ndbapi/NdbEventOperationImpl.cpp:
  set non-update pk pre data to UNDEFINED (previously unspecified)
storage/ndb/src/kernel/blocks/dbtup/DbtupCommit.cpp:
  fix detached trigger opType
storage/ndb/src/kernel/blocks/dbtup/DbtupTrigger.cpp:
  fix detached trigger opType
storage/ndb/test/ndbapi/test_event_merge.cpp:
  exact verif post/pre data