Activly abort transactions (that's affected) during NF
  This removes a lot of bugs that can occur otherwise is using
    high value for TransactionDeadLockTimout


ndb/include/kernel/signaldata/TcContinueB.hpp:
  New continueb for active transaction abort on nf
ndb/src/kernel/blocks/dbtc/Dbtc.hpp:
  Add bitmask of participating nodes to transaction record
  Add bitmask of node fail steps, so that NF_CompleteRep is not sent until all steps has completed
ndb/src/kernel/blocks/dbtc/DbtcMain.cpp:
  Active transaction baortion