fail to find a non-krbtgt service in the database and the second
component does a succesful non-dns lookup to get the real realm (which
has to be different from the originally-supplied realm). this should
help windows 2000 clients that always start their lookups in `their'
realm and do not have any idea of how to map hostnames into realms
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@9824 ec53bebd-3082-4978-b11e-865c3cabbd6b