message: Small fix in the doxygen comments in class Memory.
diff: @@ -203,10 +203,10 @@ public:
  void ClearOwnerFlags() const
  { flags = flags & ~(OWNS_HOST | OWNS_DEVICE | OWNS_INTERNAL); }
  - /// Read the optional device flag.
  + /// Read the internal device flag.
  bool UseDevice() const { return flags & USE_DEVICE; }
  - /// Set the optional device flag.
  + /// Set the internal device flag.
  void UseDevice(bool use_dev) const
  { flags = use_dev ? (flags | USE_DEVICE) : (flags & ~USE_DEVICE); }
  