heimdal use returned server entry from HDB to compare realms
heimdal use returned server entry from HDB to compare realms

Some hdb modules (samba4) may change the case of the realm in
a returned result.  Use that to determine if it matches the krbtgt
realm also returned from the DB (the DB will return it in the 'right' case)

Andrew Bartlett

Signed-off-by: Love Hornquist Astrand <c5e2f0824a6b8bf7ea1d693b4c00a7e90e09ef7a@h5l.org>

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