Declare vtkGDAL constructor & destructor private, since class is static
Declare vtkGDAL constructor & destructor private, since class is static

Change-Id: Ib7f373cdea1558b8b6cc02fe49a2fefbec8daae1

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