Rename fletch -> dartino

src/vm/lookup_cache.cc

 // Copyright (c) 2014, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 #include "src/vm/lookup_cache.h"
 
-namespace fletch {
+namespace dartino {
 
 LookupCache::LookupCache()
     : primary_(new Entry[kPrimarySize]), secondary_(new Entry[kSecondarySize]) {
   Clear();
   // These asserts need to hold when running on the target, but they don't need
   // to hold on the host (the build machine, where the interpreter-generating
   // program runs).  We put these asserts here on the assumption that the
   // interpreter-generating program will not instantiate this class.
   static_assert(kClassOffset == offsetof(Entry, clazz), "clazz");
   static_assert(kSelectorOffset == offsetof(Entry, selector), "selector");
   static_assert(kTargetOffset == offsetof(Entry, target), "target");
   static_assert(kCodeOffset == offsetof(Entry, code), "code");
 }
 
 LookupCache::~LookupCache() {
   delete[] primary_;
   delete[] secondary_;
 }
 
 void LookupCache::Clear() {
   memset(primary_, 0, sizeof(Entry) * kPrimarySize);
   memset(secondary_, 0, sizeof(Entry) * kSecondarySize);
 }
 
-}  // namespace fletch
+}  // namespace dartino