* NEWS: Fix failures when the gshadow file is not present. Thanks

 * NEWS: Fix failures when the gshadow file is not present. Thanks
   to Christian Henz (http://bugs.debian.org/467488)
 * src/gpasswd.c (get_group): Do not fail if gshadow is not present. Just use
   the group file and set the grent structure
 * src/gpasswd.c (check_perms): The permissions should be checked
   using both the gshadow and group file. Add a <struct group *>
   parameter, and check if the gshadow file exists (is_shadowgrp).
 * src/gpasswd.c (main): Do not use sgent.sg_mem or sgent.sg_adm if
   the gshadow file is not present (sgent is not initialized in that
   case). The fields of sgent can be set, but not used.