message: Fix Constants in bindings
diff: #include "adios2/common/ADIOSMacros.h"
  #include "adios2/common/ADIOSTypes.h"
  +namespace adios2
  +{
  +
  +// adios alias values and types. These not used internally and deprecated.
  +constexpr bool DebugON = true;
  +constexpr bool DebugOFF = false;
  +
  +
  +} // end namespace adios2
  +
  #include "adios2/cxx11/ADIOS.h"
  #include "adios2/cxx11/Attribute.h"
  #include "adios2/cxx11/Engine.h"
  