#18128: use standard +NNNN timezone format in POT-Creation-Date header.

Patch by Michael McFadden, with a few small style tweaks.
diff --git a/Misc/ACKS b/Misc/ACKS
index 3d4b2cc..2ebaa9b 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -911,6 +911,7 @@
 Rebecca McCreary
 Kirk McDonald
 Chris McDonough
+Michael McFadden
 Greg McFarlane
 Alan McIntyre
 Jessica McKellar