Hoist _snprintf hack up to vtkConfigure.h
Since VS 2015 now supports proper snprintf, VTK can just start using it anywhere as normal with the workaround moved to vtkConfigure.h.
One day the pre-VS2015 workaround can be removed.
Since VS 2015 now supports proper snprintf, VTK can just start using it anywhere as normal with the workaround moved to vtkConfigure.h.
One day the pre-VS2015 workaround can be removed.