/*
 *  call-seq:
 *    remove_namespaces!
 *
 *  Remove all namespaces from all nodes in the document.
 *
 *  This could be useful for developers who either don't understand namespaces
 *  or don't care about them.
 *
 *  The following example shows a use case, and you can decide for yourself
 *  whether this is a good thing or not:
 *
 *    doc = Nokogiri::XML <<-EOXML
 *       <root>
 *         <car xmlns:part="http://general-motors.com/">
 *           <part:tire>Michelin Model XGV</part:tire>
 *         </car>
 *         <bicycle xmlns:part="http://schwinn.com/">
 *           <part:tire>I'm a bicycle tire!</part:tire>
 *         </bicycle>
 *       </root>
 *       EOXML
 *    
 *    doc.xpath("//tire").to_s # => ""
 *    doc.xpath("//part:tire", "part" => "http://general-motors.com/").to_s # => "<part:tire>Michelin Model XGV</part:tire>"
 *    doc.xpath("//part:tire", "part" => "http://schwinn.com/").to_s # => "<part:tire>I'm a bicycle tire!</part:tire>"
 *    
 *    doc.remove_namespaces!
 *    
 *    doc.xpath("//tire").to_s # => "<tire>Michelin Model XGV</tire><tire>I'm a bicycle tire!</tire>"
 *    doc.xpath("//part:tire", "part" => "http://general-motors.com/").to_s # => ""
 *    doc.xpath("//part:tire", "part" => "http://schwinn.com/").to_s # => ""
 *
 *  For more information on why this probably is *not* a good thing in general,
 *  please direct your browser to
 *  http://tenderlovemaking.com/2009/04/23/namespaces-in-xml/
 */
VALUE remove_namespaces_bang(VALUE self)
{
  xmlDocPtr doc ;
  Data_Get_Struct(self, xmlDoc, doc);

  recursively_remove_namespaces_from_node((xmlNodePtr)doc);
  return self;
}