code: def StringizeLibSymlinks(symlinks):
      
      if SCons.Util.is_List(symlinks):
          try:
              return [ (k.get_path(), v.get_path()) for k,v in symlinks ]
          except (TypeError, ValueError):
              return symlinks
      else:
          return symlinks
docs: Converts list with pairs of nodes to list with pairs of node paths
      (strings). Used mainly for debugging.