(krb5_appdefault_string): handle NULL def_val (krb5_appdefault_time): new function
(krb5_appdefault_string): handle NULL def_val
(krb5_appdefault_time): new function


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@9449 ec53bebd-3082-4978-b11e-865c3cabbd6b

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal