Refactor old school alignment test to use offsetof()
Refactor old school alignment test to use offsetof()

Change-Id: I0d00618d073c7601fcf3bcf07711a9289272c864

SimVascular/VTK,sankhesh/VTK,sankhesh/VTK,jmerkow/VTK,sumedhasingla/VTK,gram526/VTK,candy7393/VTK,jmerkow/VTK,sumedhasingla/VTK,sankhesh/VTK,SimVascular/VTK,keithroe/vtkoptix,keithroe/vtkoptix,SimVascular/VTK,msmolens/VTK,jmerkow/VTK,demarle/VTK,sankhesh/VTK,SimVascular/VTK,jmerkow/VTK,candy7393/VTK,keithroe/vtkoptix,candy7393/VTK,sumedhasingla/VTK,mspark93/VTK,gram526/VTK,sankhesh/VTK,jmerkow/VTK,mspark93/VTK,keithroe/vtkoptix,mspark93/VTK,candy7393/VTK,candy7393/VTK,keithroe/vtkoptix,gram526/VTK,msmolens/VTK,gram526/VTK,keithroe/vtkoptix,gram526/VTK,SimVascular/VTK,demarle/VTK,candy7393/VTK,jmerkow/VTK,msmolens/VTK,jmerkow/VTK,msmolens/VTK,demarle/VTK,demarle/VTK,keithroe/vtkoptix,keithroe/vtkoptix,msmolens/VTK,candy7393/VTK,mspark93/VTK,sumedhasingla/VTK,mspark93/VTK,gram526/VTK,SimVascular/VTK,demarle/VTK,SimVascular/VTK,sumedhasingla/VTK,gram526/VTK,sankhesh/VTK,msmolens/VTK,demarle/VTK,SimVascular/VTK,mspark93/VTK,demarle/VTK,msmolens/VTK,sumedhasingla/VTK,mspark93/VTK,sumedhasingla/VTK,candy7393/VTK,jmerkow/VTK,msmolens/VTK,sumedhasingla/VTK,sankhesh/VTK,mspark93/VTK,demarle/VTK,gram526/VTK,sankhesh/VTK