Added include LibXML to libxml/xml (for backward compatibilty).
Added include LibXML to libxml/xml (for backward compatibilty).


increments/libxml-ruby,xml4r/libxml-ruby,sferik/libxml-ruby,xml4r/libxml-ruby,sferik/libxml-ruby,sferik/libxml-ruby,xml4r/libxml-ruby,increments/libxml-ruby,sferik/libxml-ruby,increments/libxml-ruby,sferik/libxml-ruby,sferik/libxml-ruby