Fixed test memory leaks

src/api.cc

 // Copyright 2007-2008 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 2254 matching lines @@
   if (i::V8::HasBeenSetup()) return true;
   HandleScope scope;
   if (i::Snapshot::Initialize()) {
     return true;
   } else {
     return i::V8::Initialize(NULL);
   }
 }
 
 
+bool v8::V8::Dispose() {
+  i::V8::TearDown();
+  return true;
+}
+
+
 const char* v8::V8::GetVersion() {
   return "1.1.4 (candidate)";
 }
 
 
 static i::Handle<i::FunctionTemplateInfo>
     EnsureConstructor(i::Handle<i::ObjectTemplateInfo> templ) {
   if (templ->constructor()->IsUndefined()) {
     Local<FunctionTemplate> constructor = FunctionTemplate::New();
     Utils::OpenHandle(*constructor)->set_instance_template(*templ);
@@ skipping 907 matching lines @@
       reinterpret_cast<HandleScopeImplementer*>(storage);
   List<void**>* blocks_of_archived_thread = thread_local->Blocks();
   v8::ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
       &thread_local->handle_scope_data_;
   Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
 
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal