Renaming local (hidden) variables

[Dimitrianos Savva]

Hi, 

It seems that the field varPrefix should have been used as a parameter (instead 
of prefix):

var2 = Rename.chooseVarName(var, constants, prefix) ;

in function:

Node apply(Node node)

in static class RenameAnyVars

in class org.apache.jena.sparql.engine.Rename

Thanks
Dimis