2017-05-07  Andrew Robbins  <contact@andrewrobbins.info>

	* lisp/net/net-utils.el (ffap-string-at-point): Removed due to
	'net-utils-machine-at-point' obviating this autoloaded
	function (Bug#25426).
	(dig-program-options): New customization variable.
	(nslookup-host, dns-lookup-host, run-dig): Can now specify optional
	name server argument interactively (by prefix arg) & non-interactively.