JsonCpp: the VERSION_VAR is a separate signature
JsonCpp: the VERSION_VAR is a separate signature

Also fix regex madness and a typo.

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