Add "longlist" and "source" commands, ideas borrowed from pdb++ by Antonio Cuni.
diff --git a/Misc/ACKS b/Misc/ACKS
index a94318b..3c186b4 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -180,6 +180,7 @@
 Joaquin Cuenca Abela
 John Cugini
 Tom Culliton
+Antonio Cuni
 Brian Curtin
 Lisandro Dalcin
 Andrew Dalke