message: Update enum class MemoryClass comments
diff: @@ -68,11 +68,13 @@ inline MemoryType& operator--(MemoryType &mt,int)
  * use MemoryClass::DEVICE for their inputs. */
  enum class MemoryClass
  {
  - HOST, ///< Memory types: { HOST, HOST_32, HOST_64, MANAGED }
  - HOST_32, ///< Memory types: { HOST_32, HOST_64 }
  - HOST_64, ///< Memory types: { HOST_64 }
  - DEVICE, ///< Memory types: { DEVICE, MANAGED }
  - MANAGED ///< Memory types: { MANAGED }
  + HOST, /**< Memory types: { HOST, HOST_32, HOST_64, HOST_DEBUG,
  + HOST_UMPIRE, HOST_MANAGED } */
  + HOST_32, ///< Memory types: { HOST_32, HOST_64, HOST_DEBUG }
  + HOST_64, ///< Memory types: { HOST_64, HOST_DEBUG }
  + DEVICE, /**< Memory types: { DEVICE, DEVICE_DEBUG, DEVICE_UMPIRE,
  + DEVICE_MANAGED } */
  + MANAGED ///< Memory types: { HOST_MANAGED, DEVICE_MANAGED }
  };
  /// Return true if the given memory type is in MemoryClass::HOST.
  