Centralize array-to-string conversion in vtkMINCImageAttributes.
Centralize array-to-string conversion in vtkMINCImageAttributes.

The strtod() and strtol() methods require a null-terminated string,
so call ConvertDataArrayToString() to guarantee null-termination.

keithroe/vtkoptix,keithroe/vtkoptix,SimVascular/VTK,keithroe/vtkoptix,SimVascular/VTK,keithroe/vtkoptix,SimVascular/VTK,keithroe/vtkoptix,SimVascular/VTK,SimVascular/VTK,keithroe/vtkoptix,keithroe/vtkoptix,SimVascular/VTK,SimVascular/VTK,SimVascular/VTK,keithroe/vtkoptix