xmlXPathRegisterVariable(xmlXPathContextPtr ctxt, const xmlChar *name,
			 xmlXPathObjectPtr value) {
    return(xmlXPathRegisterVariableNS(ctxt, name, NULL, value));
}
xmlXPathRegisterVariable(xmlXPathContextPtr ctxt, const xmlChar *name,
			 xmlXPathObjectPtr value) {
    return(xmlXPathRegisterVariableNS(ctxt, name, NULL, value));
}