fix the format of PhyloXML references
fix the format of PhyloXML references

The PhyloXML specification indicates that references should
match the following regular expression pattern:

[a-zA-Z0-9_]+:[a-zA-Z0-9_\.\-\s]+

In order to do so, we now prepend "VTK:" to the beginning of the
array name.

Change-Id: Ie898e19dc10ec6edd2b67a5b493f55521e15c63d

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