Patch #1643738 by Ulisses Furquim -- make the is_tripped variable
in signalmodule.c more robust.  Includes Martin von Loewis's suggestion
to set is_tripped after .tripped.
diff --git a/Misc/ACKS b/Misc/ACKS
index 5925045..65ee9e7 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -223,6 +223,7 @@
 Gyro Funch
 Peter Funk
 Geoff Furnish
+Ulisses Furquim
 Lele Gaifax
 Santiago Gala
 Yitzchak Gale