Move i18n-related runtime functions into a separate file.

src/serialize.cc

 // Copyright 2012 the V8 project 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 "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
 #include "src/global-handles.h"
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
 #include "src/natives.h"
 #include "src/objects.h"
-#include "src/runtime.h"
+#include "src/runtime/runtime.h"
 #include "src/serialize.h"
 #include "src/snapshot.h"
 #include "src/snapshot-source-sink.h"
 #include "src/v8threads.h"
 #include "src/version.h"
 
 namespace v8 {
 namespace internal {
 
 
@@ skipping 2033 matching lines @@
 
 int SerializedCodeData::CheckSum(String* string) {
   int checksum = Version::Hash();
 #ifdef DEBUG
   uint32_t seed = static_cast<uint32_t>(checksum);
   checksum = static_cast<int>(IteratingStringHasher::Hash(string, seed));
 #endif  // DEBUG
   return checksum;
 }
 } }  // namespace v8::internal