Bug 15934: vtkMetaImageWriter incorrect voxel spacing and origin
Bug 15934: vtkMetaImageWriter incorrect voxel spacing and origin

The vtkMetaImageWriter's Write() method was getting the spacing and origin
from the input's data object before updating the data object.  As a result,
an incorrect spacing and origin was written to the file header.

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