code: def CopyNoFail(src, root=None):
      
      if root is None:
          root = str(CFG["tmp_dir"])
      src_path = local.path(root) / src
  
      if src_path.exists():
          Copy(src_path, '.')
          return True
      return False
docs: Just copy fName into the current working directory, if it exists.
  
      No action is executed, if fName does not exist. No Hash is checked.
  
      Args:
          src: The filename we want to copy to '.'.
          root: The optional source dir we should pull fName from. Defaults
              to benchbuild.settings.CFG["tmpdir"].
  
      Returns:
          True, if we copied something.