From http://www.jwz.org/xscreensaver/xscreensaver-5.40.tar.gz
[xscreensaver] / OSX / InvertedSlider.h
2013-12-09 Zygo BlaxellFrom jwz.org/xscreensaver/xscreensaver-5.24.tar.gz
2013-07-16 Zygo BlaxellFrom jwz.org/xscreensaver/xscreensaver-5.22.tar.gz
2013-02-08 Zygo BlaxellFrom jwz.org/xscreensaver/xscreensaver-5.16.tar.gz
2013-02-08 Zygo Blaxellslackware.bholcomb.com/slackware/slackware-11.0/source...