mlm 6.x-1.0-alpha2

* Fix a bug in mlm.install (jerdavis)
* Make it easier and less buggy to include the mlm subscription element in arbitrary forms, like so:

function foo_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'user_register') {
      $form['mlm'] = array(
        '#type' => 'mlm_subscription',
        '#mlm_settings' => array(
          'show_mail' => FALSE,
         ),
      );
  }
}