xml_prepend: Inserting elements

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Prepending to a linked list is, of course, very easy.
  
void xml_prepend (XML * parent, XML * child)
{
   ELEMENTLIST * list;

   child->parent = parent;

   list = (ELEMENTLIST *) malloc (sizeof(struct _list));
   list->element = child;
   list->prev = NULL;
   list->next = parent->children;
   parent->children = list;
}
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