Merge topic 'thread-safe-logger'

f2c60c2e vtkLogger: construct thread-unique scope stacks

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: David Thompson <david.thompson@kitware.com>
Acked-by: Utkarsh Ayachit <utkarsh.ayachit@kitware.com>
Merge-request: !6462