Fix directories in top-level install.sh
Fix YCM installation and vim tempfile locations.
Rely only on custom sshag, not ssh-agent.
Update all submodules to HEAD of their origin/master.
Remove duplicate vim-surround entry.
Add irssi configuration.
Add .gitignore for gitscript .pyc files.
Fixes for xmonad install script.
Fix python filetype issues with an after/ directory.
Add powerline font patching.
Improve powerline installation and update symbols.
Add gnome-screenshot --interactive binding to xmonad.
Add lockscreen command to xmonad.
Update some vim bundles and settings. Also, mapleader.
Update tmux status line for better activity display.
Add tmux meta-multiplexing utilities.
Update aliases in gitconfig to take advantage of depot_tools.