xgboost updated to 3d1c82de06c5e7f18e102034a09486d94ed26667 fix magic so that it can detect binary file

lost changes in wrapper/xgboost.py, wrapper/xgboost_wrapper.h and windows/xgboost.sln
xgboost updated to 3d1c82de06c5e7f18e102034a09486d94ed26667 fix magic so that it can detect binary file

lost changes in wrapper/xgboost.py, wrapper/xgboost_wrapper.h and windows/xgboost.sln
recovered changes
project opened with msvs 2013 express
crash fixed --> demo.py completely working

TO DO: just activate openpm for visual studio win64