convert shebang lines: python -> python3
diff --git a/Tools/scripts/lll.py b/Tools/scripts/lll.py
index 5ee1504..aa4e550 100755
--- a/Tools/scripts/lll.py
+++ b/Tools/scripts/lll.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Find symbolic links and show where they point to.
 # Arguments are directories to search; default is current directory.