Merged. 

4753.	[contrib]	Software obtainable from known upstream locations
			(i.e., zkt, nslint, query-loc) has been removed.
			Links to these and other packages can be found at
			https://www.isc.org/community/tools [RT #46182]

9.12.0, 9.11.3, 9.10.7. 9.9.12