John Aycock correctly pointed out that the grammar for
"power" was formally ambiguous.  Here's his fix.
diff --git a/Misc/ACKS b/Misc/ACKS
index 5adfd51..2c1ad20 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -20,6 +20,7 @@
 Ross Andrus
 Jason Asbahr
 David Ascher
+John Aycock
 Donovan Baarda
 Alfonso Baciero
 Stig Bakken