Squashed commit of the following:
commit 77f12b02cf4e81f13e10db3cfac90e9de0b53928
Author: Mukund Sivaraman <muks@isc.org>
Date: Mon Jul 13 05:28:13 2015 +0530
Some tweaks
commit 9c521020b03c2fe7293ec4c970225fff479efd40
Author: Tony Finch <dot@dotat.at>
Date: Thu Jul 9 15:36:15 2015 +0100
rndc addzone error reporting improvements
Clearer error messages from rndc addzone and modzone when the view is not
known or when allow-new-zones is off.
Also, remove a spurious newline from the delzone response.