message: Make the type check error message more informative for contrib.layers.fully_connected.
diff: @@ -1823,8 +1823,8 @@ def fully_connected(inputs,
  ValueError: If x has rank less than 2 or if its last dimension is not set.
  """
  if not isinstance(num_outputs, six.integer_types):
  - raise ValueError('num_outputs should be int or long, got %s.' %
  - (num_outputs,))
  + raise ValueError('num_outputs type should be one of %s, got %s.' % (
  + list(six.integer_types), type(num_outputs)))
  layer_variable_getter = _build_variable_getter({
  'bias': 'biases',
  