rename

# File lib/rake/thread_history_display.rb, line 34
    def rename(hash, key, renames)
      if hash && hash[key]
        original = hash[key]
        value = renames[original]
        unless value
          value = renames[:_seq_]
          renames[:_seq_] = renames[:_seq_].succ
          renames[original] = value
        end
        hash[key] = value
      end
    end