Move utils.h and utils.cc from runtime/vm to runtime/platform

runtime/vm/double_internals.h

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, the Dart 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 file.
 
 #ifndef VM_DOUBLE_INTERNALS_H_
 #define VM_DOUBLE_INTERNALS_H_
 
-#include "vm/utils.h"
+#include "platform/utils.h"
 
 namespace dart {
 
 // We assume that doubles and uint64_t have the same endianness.
 static uint64_t double_to_uint64(double d) { return bit_cast<uint64_t>(d); }
 
 // Helper functions for doubles.
 class DoubleInternals {
  public:
   static const int kSignificandSize = 53;
@@ skipping 52 matching lines @@
   static const int kPhysicalSignificandSize = 52;  // Excludes the hidden bit.
   static const int kExponentBias = 0x3FF + kPhysicalSignificandSize;
   static const int kDenormalExponent = -kExponentBias + 1;
 
   const uint64_t d64_;
 };
 
 }  // namespace dart
 
 #endif  // VM_DOUBLE_INTERNALS_H_