Add default logger to make logging easier

mods/CORE/mcl_util/init.lua

@@ -22,6 +22,19 @@ function table.update_nil(t, ...)
 	return t
 end
 
+local LOGGING_ON = minetest.settings:get_bool("mcl_logging_default",false)
+local LOG_MODULE = "[MCL2]"
+function mcl_util.mcl_log (message, module)
+	local selected_module = LOG_MODULE
+	if module then
+		selected_module = module
+	end
+	if LOGGING_ON and message then
+		minetest.log(selected_module .. " " .. message)
+	end
+end
+
+
 function mcl_util.file_exists(name)
 	if type(name) ~= "string" then return end
 	local f = io.open(name)