Fixes for cross-realm, including (but not limited to):
Fixes for cross-realm, including (but not limited to):

* allow client to be non-existant (should probably check for "local realm")

* if server isn't found and it is a request for a krbtgt, try to find
  a realm on the way to the requested realm

* update the transited encoding iff client-realm != server-realm != tgt-realm


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@3463 ec53bebd-3082-4978-b11e-865c3cabbd6b

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