token_replace(), hook_tokens(), hook_tokens_alter(), user_mail_tokens() now take langcode

token_replace(), hook_tokens(), hook_tokens_alter() and user_mail_tokens() used to take a full language object in $options['language']. To unify this with other places, like t() and simplify the data structure, this was changed to 'langcode'.

Drupal 7:

$output = token_replace($input, array('node' => $node), array('language' => $language_interface));

function node_tokens($type, $tokens, array $data = array(), array $options = array()) {
  $url_options = array('absolute' => TRUE);
  if (isset($options['language'])) {
    $url_options['language'] = $options['language'];
    $language_code = $options['language']->langcode;
  }
  else {
    $language_code = NULL;
  }
  // ....
}

Drupal 8:

$output = token_replace($input, array('node' => $node), array('langcode' => $language_interface->langcode));

function node_tokens($type, $tokens, array $data = array(), array $options = array()) {
  $url_options = array('absolute' => TRUE);
  if (isset($options['langcode'])) {
    $url_options['language'] = language_load($options['langcode']);
    $langcode = $options['langcode'];
  }
  else {
   $langcode = NULL;
  }
  // ...
}