c++11 detection updated

AMDiS/src/Global.h

@@ -37,11 +37,13 @@
 #define OPENMODE std::ios::open_mode
 #endif
 
+#include <boost/config.hpp>
+
 // TODO: better c++11 test!
 #if (defined BOOST_NO_CXX11_OVERRIDE) || __cplusplus <= 199711L || ((defined _MSC_VER) && _MSC_VER < 1100)
   #define override 
 #endif
-#if (defined BOOST_NO_CXX11_NULLPTR) || __cplusplus <= 199711L
+#if (defined BOOST_NO_CXX11_NULLPTR) // || __cplusplus <= 199711L
   #define nullptr NULL 
 #endif