message: wrap transactional_value in ospray namespace
diff: #include "ImguiUtilExport.h"
  +namespace ospray {
  +
  template <typename T>
  class transactional_value
  {
  @@ -50,7 +52,7 @@ private:
  std::mutex mutex;
  };
  -// Inlined transactional_value Members ////////////////////////////////////////
  + // Inlined transactional_value Members //////////////////////////////////////
  template <typename T>
  template <typename OtherType>
  @@ -105,3 +107,5 @@ inline bool transactional_value<T>::update()
  return didUpdate;
  }
  +
  +}
  