workaround for bug in VS 2013 that occurs at Python init time

src/Base/Interpreter.cpp

@@ -485,6 +485,12 @@ const char* InterpreterSingleton::init(int argc,char *argv[])
 #else
         Py_SetProgramName(argv[0]);
 #endif
+        // There is a serious bug in VS from 2010 until 2013 where the file descriptor for stdin, stdout or stderr
+        // returns a valid value for GUI applications (i.e. subsytem = Windows) where it shouldn't.
+        // This causes Python to fail during initialization.
+        // A workaround is to use freopen on stdin, stdout and stderr. See the class Redirection inside main()
+        // https://bugs.python.org/issue17797#msg197474
+        //
         Py_Initialize();
         PyEval_InitThreads();
 #if PY_MAJOR_VERSION >= 3
@@ -505,6 +511,7 @@ const char* InterpreterSingleton::init(int argc,char *argv[])
         this->_global = PyEval_SaveThread();
     }
 #if PY_MAJOR_VERSION >= 3
+    PyGILStateLocker lock;
 #if PY_MINOR_VERSION >= 5
     return Py_EncodeLocale(Py_GetPath(),NULL);
 #else