(sec_login): if mechanism returns AUTH_CONTINUE, just continue with the next mechanism, this fixes the case of having GSSAPI fail because of non-existant of expired tickets
(sec_login): if mechanism returns AUTH_CONTINUE, just continue with
the next mechanism, this fixes the case of having GSSAPI fail because
of non-existant of expired tickets


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@5862 ec53bebd-3082-4978-b11e-865c3cabbd6b

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