Use lua-5.4.3 as default plainlua version

see also: #332

extensions/scripting/lua-bindings/script/framework/package_support.lua

@@ -23,6 +23,7 @@ THE SOFTWARE.
 ]]
 
 -- Cocos2d-Lua core functions
+local unpack = table.unpack
 cc.loaded_packages = {}
 local loaded_packages = cc.loaded_packages
 

extensions/scripting/lua-bindings/script/framework/transition.lua

@@ -22,6 +22,7 @@ THE SOFTWARE.
 
 ]]
 
+local unpack = table.unpack
 local transition = {}
 
 local ACTION_EASING = {}

extensions/scripting/lua-bindings/script/init.lua

@@ -22,13 +22,18 @@ THE SOFTWARE.
 
 ]]
 
--- lua-5.4
+-- >= lua-5.4
 if (math.pow == nil) then
     math.pow = function (x,y)
         return x ^ y
     end
 end
 
+-- < lua-5.4
+if (unpack) then
+    table.unpack = unpack
+end
+
 require "cocos.cocos2d.Cocos2d"
 require "cocos.cocos2d.Cocos2dConstants"
 require "cocos.cocos2d.functions"

extensions/scripting/lua-bindings/script/network/DeprecatedNetworkFunc.lua

@@ -1,3 +1,5 @@
+local unpack = table.unpack
+
 if nil == cc.XMLHttpRequest then
     return
 end