Increase test coverage for distutils.filelist (#11751).

Patch by Justin Love.
diff --git a/Misc/ACKS b/Misc/ACKS
index 0fd2192..b32de2e 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -554,6 +554,7 @@
 Stephanie Lockwood
 Anne Lord
 Tom Loredo
+Justin Love
 Jason Lowe
 Tony Lownds
 Ray Loyzaga