From http://www.jwz.org/xscreensaver/xscreensaver-5.27.tar.gz
[xscreensaver] / utils / xshm.h
2013-02-08 Zygo Blaxellpacketstormsecurity.org/UNIX/admin/xscreensaver-3.30...
2009-03-02 Zygo Blaxellftp://ftp.smr.ru/pub/0/FreeBSD/releases/distfiles/xscre...
2009-03-02 Zygo Blaxellftp://ftp.sunet.se/pub/vendor/sco/skunkware/osr5/x11...
2009-03-02 Zygo Blaxellftp.aanet.ru/pub/Linux/X11/apps/xscreensaver-2.31.tar.gz