reserved words are stored in main string table; "marked" field is

used to indicate its type.
Table initializations centralized by "tree.c".

tree.h

@@ -1,7 +1,7 @@
 /*
 ** tree.h
 ** TecCGraf - PUC-Rio
-** $Id: tree.h,v 1.11 1996/01/26 18:03:19 roberto Exp roberto $
+** $Id: tree.h,v 1.12 1996/02/12 18:32:40 roberto Exp roberto $
 */
 
 #ifndef tree_h
@@ -17,13 +17,12 @@ typedef struct TaggedString
   unsigned short varindex;  /* != NOT_USED  if this is a symbol */
   unsigned short constindex;  /* != NOT_USED  if this is a constant */
   unsigned long hash;  /* 0 if not initialized */
-  char marked;   /* for garbage collection; 2 means "never collect" */
+  int marked;   /* for garbage collection; never collect (nor change) if > 1 */
   char str[1];   /* \0 byte already reserved */
 } TaggedString;
  
 
 TaggedString *lua_createstring (char *str);
-TaggedString *luaI_createfixedstring (char *str);
 Long lua_strcollector (void);
 
 #endif