rewrite makefile, and remove luacode cache.

examples/simpledb.lua

@@ -0,0 +1,38 @@
+local skynet = require "skynet"
+local db = {}
+
+local command = {}
+
+function command.GET(key)
+	skynet.ret(db[key])
+end
+
+function command.SET(key, value)
+	local last = db[key]
+	db[key] = value
+	skynet.ret(last)
+end
+
+local trace_cache = {}
+
+skynet.trace_callback(function(handle, ti)
+	print("TRACE",trace_cache[handle],ti)
+	trace_cache[handle] = nil
+end)
+
+skynet.start(function()
+	skynet.dispatch("text", function(session, address, message)
+		trace_cache[skynet.trace()] = message
+		print("simpledb",message, skynet.address(address), session)
+		local cmd, key , value = string.match(message, "(%w+) (%w+) ?(.*)")
+		local f = command[cmd]
+		if f then
+			f(key,value)
+		else
+			skynet.ret("Invalid command : "..message)
+		end
+	end)
+	skynet.register "SIMPLEDB"
+end)
+
+