Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except when necessary.
Patch by Oscar Benjamin.
diff --git a/Misc/ACKS b/Misc/ACKS
index 6048ed8..cbef1f0 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -84,6 +84,7 @@
 Thomas Bellman
 Alexander “Саша” Belopolsky
 David Benjamin
+Oscar Benjamin
 Andrew Bennetts
 Andy Bensky
 Bennett Benson