AHAH framework needs to check for keyCode == 10 in addition to keyCode == 13

The new CTools AJAX framework replacement of existing ahah #544418: Integrate CTools AJAX framework with Drupal to extend (and replace) existing ahah framework has special case javascript code to test for enter key:

+      // Detect enter key.
+      if (event.keyCode == 13) {
+        $(element_settings.element).trigger(element_settings.event);
+        return false;
+      }

In order for this to also work in iPhone, this need to also test for event.keyCode == 10 as iPhone Safari sends 10 for enter key.