New methods in Attr

• Adds:

  schemaTypeInfo

  A TypeInfo object that provides a name and URI for the attribute's type, as given in the document's schema.

  isId

  Method to tell if an attribute is an ID type

• Java binding:

  package org.w3c.dom;
    
  public interface Attr extends Node {
    
    public TypeInfo getSchemaTypeInfo();
    public boolean isId();
  
  }