Change target directory for doc
    
    Previously, Fedora documentation was installed in /usr/share/doc/HTML
    with subdirectories for the document, and then the language.  Over
    time, other documents changed to a subdiretory for each language and
    then the document.
    
    Later still, it became the custom to place documentation in
    /usr/share/doc/<application>-<version>.  Since many users were
    examining documents directly, rather than through the menu, it was
    believed that moving the system documentation, especially the Release
    Notes, would be a problem for these users.
    
    In the Fedora 17 Release Notes, users were advised that the Release
    Notes would be moving to the now standard directory for Fedora 18.
    This change implements that move.