Update contract of dns_name_rdatacompare to return < 0, 0, > 0 instead of -1, 0, 1.
Update contract of dns_name_rdatacompare to return < 0, 0, > 0 instead of
-1, 0, 1.

each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab