Lua: add Lua.type

std/lua/Lua.hx

@@ -14,4 +14,5 @@ extern class Lua {
 	public static function ipairs<T>(t: Table<Int,T>): Void->T;
 	public static function pairs<A,B>(t: Table<A,B>): Void->A;
 	public static function tonumber(str:String, base:Int): Int;
+	public static function type(v:Dynamic): String;
 }