Revert "Snapshot i18n Javascript code" and "Fix mjsunit/debug-script after r16298".

src/mksnapshot.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 296 matching lines @@
   fprintf(stderr, "\n");
 }
 
 
 int main(int argc, char** argv) {
   V8::InitializeICU();
 
   // By default, log code create information in the snapshot.
   i::FLAG_log_code = true;
 
+  // Disable the i18n extension, as it doesn't support being snapshotted yet.
+  i::FLAG_enable_i18n = false;
+
   // Print the usage if an error occurs when parsing the command line
   // flags or if the help flag is set.
   int result = i::FlagList::SetFlagsFromCommandLine(&argc, argv, true);
   if (result > 0 || argc != 2 || i::FLAG_help) {
     ::printf("Usage: %s [flag] ... outfile\n", argv[0]);
     i::FlagList::PrintHelp();
     return !i::FLAG_help;
   }
 #ifdef COMPRESS_STARTUP_DATA_BZ2
   BZip2Decompressor natives_decompressor;
@@ skipping 103 matching lines @@
       "",
       ser.CurrentAllocationAddress(i::NEW_SPACE),
       ser.CurrentAllocationAddress(i::OLD_POINTER_SPACE),
       ser.CurrentAllocationAddress(i::OLD_DATA_SPACE),
       ser.CurrentAllocationAddress(i::CODE_SPACE),
       ser.CurrentAllocationAddress(i::MAP_SPACE),
       ser.CurrentAllocationAddress(i::CELL_SPACE),
       ser.CurrentAllocationAddress(i::PROPERTY_CELL_SPACE));
   return 0;
 }