* daemon/slave.c, daemon/verify-crypt.c, daemon/verify-pam.c,
          daemon/verify-shadow.c, gui/gdmcommon.c: Fix so that if
          timed login script returns an invalid user, timed login is
          not turned on.  Fixes bug #340148.  Patch by Andrew
          (andrewz@springsrescuemission.org).
        * gui/gdmuser.c: Fix gdm_is_user_valid so it is more simple,
          like implemented in daemon/slave.c by Andrew.