first implementation of '<<', '>>', and '~' (bitwise not)

llex.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llex.h,v 1.74 2013/04/26 13:07:53 roberto Exp roberto $
+** $Id: llex.h,v 1.75 2013/08/30 16:01:37 roberto Exp roberto $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
@@ -27,6 +27,7 @@ enum RESERVED {
   TK_RETURN, TK_THEN, TK_TRUE, TK_UNTIL, TK_WHILE,
   /* other terminal symbols */
   TK_IDIV, TK_CONCAT, TK_DOTS, TK_EQ, TK_GE, TK_LE, TK_NE,
+  TK_SHL, TK_SHR,
   TK_DBCOLON, TK_EOS,
   TK_FLT, TK_INT, TK_NAME, TK_STRING
 };