ssh: use a separate known_hosts file for my virtual machines
bashrc: 9term now uses TERM=dumb
bashrc: limit 256-color automagic to modern vte
environ: rain: add a hack for nokogiri

The bloody thing first downloads and builds its own copy libxml 2.8.0
during `gem install`, and then has the balls to complain that I'm not
running 2.8.0 on my system.
gtkrc-1.0: include a theme
xprofile: remove outdated comment about keyring

Also reduce verbosity.
xprofile: cinnamon-screensaver looks nicer

And is actually maintained.