1) Make getNoParall into function instead of a procedure
2) Check for multiple transactions in "upgrade's" parallell queue
3) Set lock mode according to lock_owner's lockMode

NOTE: Does still not handle lock upgrade in case of aborts correctly


ndb/src/kernel/blocks/dbacc/Dbacc.hpp:
  Make getNoParall into function instead of a procedure
ndb/src/kernel/blocks/dbacc/DbaccMain.cpp:
  1) Make getNoParall into function instead of a procedure
  2) Check for multiple transactions in "upgrade's" parallell queue
  3) Set lock mode according to lock_owner's lockMode