Emacs: remove stale files

Emacs (org-mode): Various tweaks

xsession: check for awesome WM presence

do-install: Added --build-dir option

Emacs: Added `rotty/quit-emacs', more backup files

Emacs: switch to Derick Eddington's scheme-mode; goodbye quack

ack: Add {sls,scm}.in to `scheme' type

zsh: tweaked some pathish envvars, test for keychain

Awesome: several tweaks

Emacs: renamed config snippets to avoid issues with `eval-after-load'

zsh: run keychain

zsh: Tweaked some search paths, add `-R' to $LESS

Conkeror: config updated

GnuPG: Prefer stronger algorithms

X11: Fix xterm input, switch to awesome WM (config added)