SF patch #875689: >100k alloc wasted on startup
(Contributed by Mike Pall.)

Make sure fill_free_list() is called only once rather than 106 times
when pre-allocating small ints.
diff --git a/Misc/ACKS b/Misc/ACKS
index 77c7980..61b07cb 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -411,6 +411,7 @@
 Douglas Orr
 Denis S. Otkidach
 Russel Owen
+Mike Pall
 Todd R. Palmer
 Alexandre Parenteau
 Dan Parisien