Add ACKS entry for r77472.
diff --git a/Misc/ACKS b/Misc/ACKS
index f4f6b9a..f6df409 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -165,6 +165,7 @@
 Drew Csillag
 John Cugini
 Tom Culliton
+Brian Curtin
 Lisandro Dalcin
 Andrew Dalke
 Lars Damerow