Fix 64bit types in cosmo reader.
Fix 64bit types in cosmo reader.

Cosmo64 doesn't use 64 bit velocities or grids. Fixed that.

Change-Id: I712b1bf7cc07f45add8a87dd6e92795520e4f475

jmerkow/VTK,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,keithroe/vtkoptix,sumedhasingla/VTK,mspark93/VTK,jmerkow/VTK,jmerkow/VTK,sumedhasingla/VTK,sumedhasingla/VTK,berendkleinhaneveld/VTK,johnkit/vtk-dev,johnkit/vtk-dev,sankhesh/VTK,mspark93/VTK,johnkit/vtk-dev,SimVascular/VTK,sumedhasingla/VTK,keithroe/vtkoptix,hendradarwin/VTK,candy7393/VTK,SimVascular/VTK,demarle/VTK,SimVascular/VTK,demarle/VTK,sumedhasingla/VTK,biddisco/VTK,mspark93/VTK,berendkleinhaneveld/VTK,msmolens/VTK,keithroe/vtkoptix,biddisco/VTK,sumedhasingla/VTK,hendradarwin/VTK,SimVascular/VTK,msmolens/VTK,SimVascular/VTK,candy7393/VTK,biddisco/VTK,demarle/VTK,candy7393/VTK,sankhesh/VTK,jmerkow/VTK,hendradarwin/VTK,biddisco/VTK,berendkleinhaneveld/VTK,sankhesh/VTK,demarle/VTK,gram526/VTK,sankhesh/VTK,demarle/VTK,mspark93/VTK,hendradarwin/VTK,sankhesh/VTK,berendkleinhaneveld/VTK,mspark93/VTK,ashray/VTK-EVM,ashray/VTK-EVM,berendkleinhaneveld/VTK,biddisco/VTK,gram526/VTK,demarle/VTK,keithroe/vtkoptix,jmerkow/VTK,sankhesh/VTK,jmerkow/VTK,gram526/VTK,johnkit/vtk-dev,SimVascular/VTK,jmerkow/VTK,SimVascular/VTK,sumedhasingla/VTK,msmolens/VTK,msmolens/VTK,ashray/VTK-EVM,candy7393/VTK,hendradarwin/VTK,johnkit/vtk-dev,candy7393/VTK,gram526/VTK,mspark93/VTK,msmolens/VTK,gram526/VTK,keithroe/vtkoptix,biddisco/VTK,sankhesh/VTK,johnkit/vtk-dev,jmerkow/VTK,hendradarwin/VTK,keithroe/vtkoptix,ashray/VTK-EVM,ashray/VTK-EVM,candy7393/VTK,msmolens/VTK,msmolens/VTK,mspark93/VTK,ashray/VTK-EVM,hendradarwin/VTK,biddisco/VTK,ashray/VTK-EVM,demarle/VTK,johnkit/vtk-dev,gram526/VTK,mspark93/VTK,keithroe/vtkoptix,sumedhasingla/VTK,gram526/VTK,SimVascular/VTK,demarle/VTK,sankhesh/VTK,msmolens/VTK,gram526/VTK,ashray/VTK-EVM,candy7393/VTK,keithroe/vtkoptix,candy7393/VTK