Run 2to3 over the Demo/ directory to shut up parse errors from 2to3 about lingering print statements.
diff --git a/Demo/scripts/pp.py b/Demo/scripts/pp.py
index 2530ea3..486986a 100755
--- a/Demo/scripts/pp.py
+++ b/Demo/scripts/pp.py
@@ -58,7 +58,7 @@
         NFLAG = 1
         PFLAG = 1
     else:
-        print option, 'not recognized???'
+        print(option, 'not recognized???')
 
 if not ARGS: ARGS.append('-')