Update to lua 5.4 (#1174)

* update to lua 5.4.0-rc1

* remove LUA_ERRGCMM

* use age bits for shared

* remove unused lbitlib.c

* use luaV_fastget

* fix #1174

* suspend函数tailcall优化

* 防止没有session导致未调用suspend

* luaH_setint check shared (#1184)

* set LUA_GCGEN by default

* fix #1174 (#1186)

checkshared in sweeplist

* update to lua 5.4 rc2

* update to lua 5.4 rc4

* move skynet.profile into snlua

* Use lua_sethook to interrupt tight loops

* remove lua_checksig

* critical condition for signals

* update to lua 5.4 released

* lua 5.4 bugfix

* update lua bugfix

* fix lua_sharestring (#1224)

* update lua

* update lua 5.4

* update README

* add skynet.select

* add test

* test error & discard

* yield session

* request error has no error message

* add timeout to skynet.select

* bugfix

* for lua 5.4

* new version

* bugfix

* bugfix

* use if instead of while

* make local

* yield in select for

* update lua 5.4.1

* change lua version (#1245)

Co-authored-by: xiaojin <xiaojin@onemt.com.cn>

* update lua version number

Co-authored-by: hong <hongling0@gmail.com>
Co-authored-by: hong <hongling-0@qq.com>
Co-authored-by: 风---自由 <996442717qqcom@gmail.com>
Co-authored-by: xiaojin <xiaojin@onemt.com.cn>

3rd/lua/llex.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llex.h,v 1.79.1.1 2017/04/19 17:20:42 roberto Exp $
+** $Id: llex.h $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
@@ -7,11 +7,17 @@
 #ifndef llex_h
 #define llex_h
 
+#include <limits.h>
+
 #include "lobject.h"
 #include "lzio.h"
 
 
-#define FIRST_RESERVED	257
+/*
+** Single-char tokens (terminal symbols) are represented by their own
+** numeric code. Other tokens start at the following value.
+*/
+#define FIRST_RESERVED	(UCHAR_MAX + 1)
 
 
 #if !defined(LUA_ENV)
@@ -37,7 +43,7 @@ enum RESERVED {
 };
 
 /* number of reserved words */
-#define NUM_RESERVED	(cast(int, TK_WHILE-FIRST_RESERVED+1))
+#define NUM_RESERVED	(cast_int(TK_WHILE-FIRST_RESERVED + 1))
 
 
 typedef union {