Add submitpost_box action to post edit form. Props filosofo. see #5873

git-svn-id: https://develop.svn.wordpress.org/trunk@6898 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/edit-form-advanced.php

@@ -178,6 +178,7 @@ if ( ('edit' == $action) && current_user_can('delete_post', $post_ID) )
 </ul>
 </div>
 <?php endif; ?>
+<?php do_action('submitpost_box'); ?>
 </div>
 
 <p class="submit">