Set auth type differently, we use one CURLOPT_HTTPAUTH instead as we plan

to add more method in the future.

lib/urldata.h

@@ -689,9 +689,7 @@ struct UserDefined {
   long use_port;     /* which port to use (when not using default) */
   char *userpwd;     /* <user:password>, if used */
   bool httpdigest;   /* if HTTP Digest is enabled */
-#ifdef GSSAPI
   bool httpnegotiate; /* if HTTP Negotiate authentication is enabled */
-#endif
   char *set_range;   /* range, if used. See README for detailed specification
                         on this syntax. */
   long followlocation; /* as in HTTP Location: */