ndb - fix gcc4 compile problem

#include <NdbOut.hpp>

#include <NdbSleep.h>

#include "ObjectMap.hpp"

#include <NdbIndexScanOperation.hpp>

#include <NdbIndexOperation.hpp>

#include "NdbUtil.hpp"

#include <NdbBlob.hpp>

class NdbGlobalEventBufferHandle;

NdbGlobalEventBufferHandle *NdbGlobalEventBuffer_init(int);