Merge remote-tracking branches 'spirit', 'crybaby' and 'staging'

* spirit:
  firefox/stylus/stackoverflow.com.css: Add style for Stackmumble.
  firefox/stylus/wikimedia.org.css: Apply Mediawiki styling at the client side.
  firefox/stylus/tvtropes.com.css: Make the text be actually white.
  firefox/stylus/salsa.debian.org.css: Focus style changes more carefully.
  firefox/stylus/salsa.debian.org.css: Reformat the body style.
  bin/, Makefile: Add some scripts for doing stuff to remote machines.
  dot/emacs: Reconfigure PostScript printing of buffers.
  el/dot-emacs.el: Fix fontification in printouts.
  el/dot-emacs.el: Print buffers in a condensed version of Courier.
  el/dot-emacs.el: Don't print `flyspell' overlays.
  firefox/chrome-userContent.css: Remove (invisible) borders round monospace.
  firefox/chrome-userContent.css: Set headings in sans.
  firefox/searchplugins/: Add some search engine definitions.
  bin/mdw-build: Prepare for a world where `mdw-setup' doesn't exist any more.

* crybaby:
  el/dot-emacs.el: Fix `loop' indentation for older Emacsen.
  bin/hyperspec: Track changes to Emacs hyperspec internals.

* staging:
  firefox/stylus.slack.com.css: Kick Slack styling some more.
  el/dot-emacs.el: Rename the Trustonic C styles.