Merge trift2.:/M50/tmp_merge2

into  trift2.:/M51/merge-5.1


include/my_sys.h:
  Auto merged
mysql-test/r/federated.result:
  Auto merged
mysql-test/t/federated.test:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/log.cc:
  Auto merged