(add_builtin): ok for __gss_mech_initialize() to return NULL
(add_builtin): ok for __gss_mech_initialize() to return NULL


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@20625 ec53bebd-3082-4978-b11e-865c3cabbd6b

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