From http://www.jwz.org/xscreensaver/xscreensaver-5.40.tar.gz
[xscreensaver] / hacks / glx / extrusion-twistoid.c
2014-05-30 Zygo BlaxellFrom jwz.org/xscreensaver/xscreensaver-5.27.tar.gz
2013-02-08 Zygo Blaxellslackware.bholcomb.com/slackware/slackware-11.0/source...
2013-02-08 Zygo Blaxellftp.ksu.edu.tw/FTP/FreeBSD/distfiles/xscreensaver-4...
2013-02-08 Zygo Blaxellpacketstormsecurity.org/UNIX/admin/xscreensaver-4.05...
2013-02-08 Zygo Blaxellpacketstormsecurity.org/UNIX/admin/xscreensaver-4.03...
2009-03-02 Zygo Blaxellftp.x.org/contrib/applications/xscreensaver-3.25.tar.gz
2009-03-02 Zygo Blaxellftp.x.org/contrib/applications/xscreensaver-3.19.tar.gz