Pls fix SSLAuthenticator.java

[Kar YEOW]

During testing of logout from SingleSignOn, I discovered that the logout
failed because when using CLIENT-CERT SSLAuthenticator.java authenticate
method never associate the session with SingleSignOn.  I wonder those who
have access to Source could pls fix SSLAuthenticator.java.  TIA.
Kar

PS Here are the bit of codes in FormAuthenticator.java I think should also
be in SSLAuthenticator.java

        // Have we already authenticated someone?
        Principal principal = hreq.getUserPrincipal();
        if (principal != null) {
            if (debug >= 1)
                log("Already authenticated '" +
                    principal.getName() + "'");
            String ssoId = (String)
request.getNote(Constants.REQ_SSOID_NOTE);
            if (ssoId != null)
                associate(ssoId, getSession(request, true));
            return (true);
        }