new constant 'LUA_GNAME' for the name of the global table "_G"

lauxlib.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.h,v 1.131 2016/12/06 14:54:31 roberto Exp roberto $
+** $Id: lauxlib.h,v 1.132 2017/04/24 18:06:12 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -15,6 +15,10 @@
 #include "lua.h"
 
 
+/* global table */
+#define	LUA_GNAME	"_G"
+
+
 
 /* extra error code for 'luaL_loadfilex' */
 #define LUA_ERRFILE     (LUA_ERRERR+1)