From http://www.jwz.org/xscreensaver/xscreensaver-5.24.tar.gz
[xscreensaver] / hacks / glx / xscreensaver-gl-helper.c
2013-02-08 Zygo Blaxellslackware.bholcomb.com/slackware/slackware-11.0/source...
2013-02-08 Zygo Blaxellftp://ftp.krokus.ru/pub/OpenBSD/distfiles/xscreensaver...
2009-03-02 Zygo Blaxellftp.x.org/contrib/applications/xscreensaver-3.26.tar.gz