Add ragel validator to SCONS

src/trusted/validator_ragel/unreviewed/decoder-x86_64.rl

 /*
  * Copyright (c) 2011 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <assert.h>
-#include <elf.h>
-#include <inttypes.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include "decoder.h"
 
-#undef TRUE
-#define TRUE    1
+#include "native_client/src/include/elf32.h"
+#include "native_client/src/shared/utils/types.h"
+#include "native_client/src/trusted/validator_ragel/unreviewed/decoder.h"
 
-#undef FALSE
-#define FALSE   0
-
-#include "decoder-x86_64-instruction-consts.c"
+#include "native_client/src/trusted/validator_ragel/gen/decoder-x86_64-instruction-consts.c"
 
 %%{
   machine x86_64_decoder;
   alphtype unsigned char;
 
   include decode_x86_64 "decoder-x86_64-instruction.rl";
 
   main := (one_instruction
     >{
         begin = p;
@@ skipping 133 matching lines @@
   int result = 0;
 
   int cs;
 
   %% write init;
   %% write exec;
 
 error_detected:
   return result;
 }