many changes to support glew and android
many changes to support glew and android

Change-Id: Ia4a6ecb86c53582349e7631b376cf739cd31c27e

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