Prevent threading.Thread.join() from blocking when a previous call raised an
exception (e.g., passing in an illegal argument).

Applies patch #1314396.  Thanks Eric Blossom.
diff --git a/Misc/ACKS b/Misc/ACKS
index 72ed346..8eebc05 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -63,6 +63,7 @@
 Martin Bless
 Pablo Bleyer
 Erik van Blokland
+Eric Blossom
 Finn Bock
 Paul Boddie
 Matthew Boedicker