Thread-related classes are useless in VTK with C++11 support
Certain thread-related classes in VTK are now useless since we support C++11. We should deprecate them and remove their usages in VTK.
The classes are :
vtkMutexLock -> std::mutex vtkCriticalSection -> std::mutex vtkSimpleCriticalSection -> std::mutex vtkMultiThreader -> std::thread (?) vtkConditionVariable -> std::condition_variable vtkAtomic -> std::atomic