Fix up rdocs. 
Fix up rdocs. 

http://rubyforge.org/tracker/?func=detail&atid=1971&aid=23604&group_id=494

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