Merge two tables recursively without worry of 'stack overflow'

table_merge.lua

function table_merge(into,from)
	local stack = {}
	local node1 = into
	local node2 = from
	while (true) do
		for k,v in pairs(node2) do
			if (type(v) == "table" and type(node1[k]) == "table") then
				table.insert(stack,{node1[k],node2[k]})
			else
				node1[k] = v
			end
		end
		if (#stack > 0) then
			local t = stack[#stack]
			node1,node2 = t[1],t[2]
			stack[#stack] = nil
		else
			break
		end
	end
	return into
end