- Remove usage of NdbMem_Allocate() and NdbMem_Free() and instead
   call malloc() or free() directly
 - Remove functions NdbMem_Allocate() and NdbMem_Free()
 - Remove NdbMem_Create() and NdbMem_Destroy() which had no effect
 - Remove unused NdbMem_AllocateAlign()
 - Remove unused test code
 - Remove unnecessary usage of "#include <NdbMem.h>"
 - Only functions which locks memory are now left in NdbMem.h
   and uses NdbMem.h