BUG #15128: Don't use vtkWin32OutputWindow.

On non-client processes, don't create vtkWin32OutputWindow.

Change-Id: I205d0b7f7d8da76f6d106f02503a95525f5a03ad
Merge topic '15128_fix_output_window_on_Windows' into next

e3c35d3f BUG #15128: Don't use vtkWin32OutputWindow.