added unused code to remove copyright strings.
TODO: use a switch on $1 to choose behavior of updateCopyright.sh
-u (update)
-r (remove)
-t (test run, just print commands)
-c (clean: remove backup files)
-l (list: which files have current notice, old notice, no notice)
-f (file to read from, if not default)
test script to look at numerical differences between algorithms