MEDIUM: config: inform the user about the deprecatedness of "block" rules
It's just a warning emitted once.
diff --git a/include/types/global.h b/include/types/global.h
index 21433e8..967d3b4 100644
--- a/include/types/global.h
+++ b/include/types/global.h
@@ -173,7 +173,7 @@
extern unsigned int warned; /* bitfield of a few warnings to emit just once */
/* bit values to go with "warned" above */
-/* #define WARN_* */
+#define WARN_BLOCK_DEPRECATED 0x00000001
/* to be used with warned and WARN_* */
static inline int already_warned(unsigned int warning)