Fix build with later Lua libraries.

CHANGELOG

@@ -22,7 +22,10 @@ version 2.64
 	    Add SetServersEX method in DBus interface. Thanks to Dan
 	    Williams for the patch.
 
+	    Fix build with later Lua libraries. Thansk to Cristian
+	    Rodriguez for the patch.
 
+	    
 version 2.63
             Do duplicate dhcp-host address check in --test mode.
 

src/helper.c

@@ -34,10 +34,15 @@ static void my_setenv(const char *name, const char *value, int *error);
 static unsigned char *grab_extradata(unsigned char *buf, unsigned char *end,  char *env, int *err);
 
 #ifdef HAVE_LUASCRIPT
+#define LUA_COMPAT_ALL
 #include <lua.h>  
 #include <lualib.h>  
 #include <lauxlib.h>  
 
+#ifndef lua_open
+#define lua_open()     luaL_newstate()
+#endif
+
 lua_State *lua;
 
 static unsigned char *grab_extradata_lua(unsigned char *buf, unsigned char *end, char *field);