Some platforms provide uintptr_t in inttypes.h.  Patch by
Akira Kitada.
diff --git a/Misc/ACKS b/Misc/ACKS
index 97792ad..e8132fb 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -435,6 +435,7 @@
 Magnus Kessler
 Lawrence Kesteloot
 Vivek Khera
+Akira Kitada
 Mads Kiilerich
 Taek Joo Kim
 Paul Kippes