Per discussion on python-dev, remove CO_GENERATOR_ALLOWED. Leave comment about not removing yet.
diff --git a/Include/code.h b/Include/code.h
index 1c8fbb3..7dd13fe 100644
--- a/Include/code.h
+++ b/Include/code.h
@@ -40,7 +40,10 @@
*/
#define CO_NOFREE 0x0040
-#define CO_GENERATOR_ALLOWED 0x1000 /* no longer used in an essential way */
+#if 0
+/* This is no longer used. Stopped defining in 2.5, do not re-use. */
+#define CO_GENERATOR_ALLOWED 0x1000
+#endif
#define CO_FUTURE_DIVISION 0x2000
#define CO_MAXBLOCKS 20 /* Max static block nesting within a function */