fix handling of write's in lock queue
  add test case
  add support for pkWrite+async exec in HugoOperations


ndb/src/kernel/blocks/dbacc/DbaccMain.cpp:
  Handle operation type wrt ZWRITE when restarting operations
ndb/test/include/HugoOperations.hpp:
  Add support for 
  1) pkWriteRecord 
  2) async execute
ndb/test/ndbapi/testNdbApi.cpp:
  Extend test case for bug#11133 with multi transaction tests aswell...
ndb/test/src/HugoOperations.cpp:
  Add support for 
  1) pkWriteRecord 
  2) async execute