Remove more cruft leftover from nb_coerce.  Rename nb_coerce to
nb_reserved.
diff --git a/Objects/boolobject.c b/Objects/boolobject.c
index 3674086..dfea7f4 100644
--- a/Objects/boolobject.c
+++ b/Objects/boolobject.c
@@ -108,7 +108,7 @@
 	bool_and,		/* nb_and */
 	bool_xor,		/* nb_xor */
 	bool_or,		/* nb_or */
-	0,			/* nb_coerce */
+	0,			/* nb_reserved */
 	0,			/* nb_int */
 	0,			/* nb_long */
 	0,			/* nb_float */