workaround for python bug [#24400] If Script is executed with TEXT Editor, it becomes an error.

having the blend file as a part of the __file__ variable is not essential, this is fixed in python 3.2 so add an ifdef and don't use the blend file path for py older then 3.2.

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -36,6 +36,16 @@
 
 #ifndef DISABLE_PYTHON
 
+#ifdef _POSIX_C_SOURCE
+#undef _POSIX_C_SOURCE
+#endif
+
+#ifdef _XOPEN_SOURCE
+#undef _XOPEN_SOURCE
+#endif
+
+#include <Python.h>
+
 extern "C" {
 	#include "bpy_internal_import.h"  /* from the blender python api, but we want to import text too! */
 	#include "py_capi_utils.h"