"Convert LOCAL-NAME into a fully qualified name.
A fully qualified name is a cons of the namespace name and the
name of the element itself. For example \"xsd:string\" is
-converted to \(\"http://www.w3.org/2001/XMLSchema\" . \"string\"\).
+converted to \(\"http://www.w3.org/2001/XMLSchema\" . \"string\").
The USE-TNS argument specifies what to do when LOCAL-NAME has no
namespace tag. If USE-TNS is non-nil, the `soap-target-xmlns'