Modified a number of scripts using "/bin/env" to make it
"/usr/bin/env", since the "/bin" location does not exist on some
versions of Linux.
diff --git a/common/split_spice.py b/common/split_spice.py
index f7cc695..dedad24 100755
--- a/common/split_spice.py
+++ b/common/split_spice.py
@@ -1,4 +1,4 @@
-#!/bin/env python3
+#!/usr/bin/env python3
 #
 # split_spice.py --
 #