Log Message:
xscreensaver: update to 6.04.

New hacks, nakagin and chompytower.
Settings dialog shows diagnostics for bad image folders and feeds.
URLs for imageDirectory can now point at archive.org collections.
Sliders for various “Speed” preferences are easier to use.
X11: Settings dialog shows saver description below embedded preview.
X11: Better behavior when zero monitors are attached.
X11: Improvements to inhibiting blanking while videos are playing: No longer \ 
necessary to hack GNOME and KDE to get them to not usurp the \ 
org.freedesktop.ScreenSaver endpoint.
X11: unicrud displays character names.
Updated webcollage.