message: fix denormals issue, done before initializing the tasking system (i.e. TBB)
diff: # include "TaskSys.h"
  #endif
  +#include "../intrinsics.h"
  #include "../common.h"
  namespace ospcommon {
  @@ -62,6 +63,9 @@ namespace ospcommon {
  void initTaskingSystem(int numThreads)
  {
  + _MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
  + _MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
  +
  #if defined(OSPRAY_TASKING_TBB)
  if (!g_tasking_handle.get())
  g_tasking_handle = make_unique<tasking_system_handle>(numThreads);
  