adding skit attribute to replicaX,Y, Z

...eoModelXML/GeoModelXml/GeoModelXml/ReplicaRPhiProcessor.h

...s/GeoModelXML/GeoModelXml/GeoModelXml/ReplicaXProcessor.h

...s/GeoModelXML/GeoModelXml/GeoModelXml/ReplicaYProcessor.h

...s/GeoModelXML/GeoModelXml/GeoModelXml/ReplicaZProcessor.h

GeoModelTools/GeoModelXML/GeoModelXml/data/geomodel.dtd

...ools/GeoModelXML/GeoModelXml/src/ReplicaRPhiProcessor.cxx

...elTools/GeoModelXML/GeoModelXml/src/ReplicaXProcessor.cxx

...elTools/GeoModelXML/GeoModelXml/src/ReplicaYProcessor.cxx

...elTools/GeoModelXML/GeoModelXml/src/ReplicaZProcessor.cxx