"fixed" objects kept in a separated list (instead of being kept in

'allgc' list with a bit marking them)

lstring.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lstring.h,v 1.50 2013/08/16 18:55:49 roberto Exp roberto $
+** $Id: lstring.h,v 1.51 2013/08/21 19:21:16 roberto Exp roberto $
 ** String table (keep all strings handled by Lua)
 ** See Copyright Notice in lua.h
 */
@@ -19,8 +19,6 @@
 #define luaS_newliteral(L, s)	(luaS_newlstr(L, "" s, \
                                  (sizeof(s)/sizeof(char))-1))
 
-#define luaS_fix(s)	setbits((s)->tsv.marked, bit2mask(FIXEDBIT, LOCALBIT))
-
 
 /*
 ** test whether a string is a reserved word