Largely replace the Debian packaging with a new and much more up-to-date

Debhelper based version.

debian/tests/functions.d/log.lua

@@ -0,0 +1,40 @@
+-- Lua script logging calls from dnsmasq
+
+-- Open the log file in append mode 
+logfile = assert(io.open("/var/log/dnsmasq-lua.log", "a"))
+
+-- Prepend date and time to a string and write the result to the log file
+function __log(str)
+	logfile:write(os.date("!%FT%TZ ")..str.."\n")
+end
+
+-- flush the log file
+function __flush_log()
+	logfile:flush()
+end
+
+-- Log a call to init()
+function init()
+	__log("initialising")
+	__flush_log()
+end
+
+-- Log a call to shutdown()
+function shutdown()
+	__log("shutting down")
+	__flush_log()
+end
+
+-- Log a call to lease() including all arguments
+function lease(operation, params)
+	local lines = {}
+	__log(operation.." lease")
+	for key,value in pairs(params) do
+		table.insert(lines, key..": "..value)
+	end
+	table.sort(lines)
+	for index,line in ipairs(lines) do
+		__log("\t"..line)
+	end
+	__flush_log()
+end