Add __future__ import for print_function. It's a no-op in 3.0, but it needs to not be a syntax error.
Closes issue 2436.
diff --git a/Include/code.h b/Include/code.h
index 56d6cb5..e576bbb 100644
--- a/Include/code.h
+++ b/Include/code.h
@@ -48,6 +48,7 @@
#define CO_FUTURE_DIVISION 0x2000
#define CO_FUTURE_ABSOLUTE_IMPORT 0x4000 /* do absolute imports by default */
#define CO_FUTURE_WITH_STATEMENT 0x8000
+#define CO_FUTURE_PRINT_FUNCTION 0x10000
#endif
/* This should be defined if a future statement modifies the syntax.