Switch to simple pushes for git; add git hosts

Conflicts:
	.ssh/known_hosts
Add things from sbland's configs
Add tmux integration - try to attach to a running session, or create one
(preferably with imuxegration) if it doesn't exist
Add better tmux autography. If we're running inside iTerm, use its
integration; if we're not, use normal tmuxification to attach/create the
session.
Merge with changes on bodacious
Cleanup from jpl
fix .gitignore
It turns out that "git upstream" does the thing that I thought that "git
current" does.
Merge commit '98d5aba6a10abf36c3a44a164e158f16b2d21264'

Conflicts:
	.bash_profile
	.git_template/hooks/pre-commit
	.gitconfig
	.gitignore
	.ssh/config
Add a link to ssh config in private repo, and tweak authorized_keys
Fix path to config
Add an alias to help me start awl
Add key for bodacious-ubuntu
Add mosh cleanup
Switch git email address
Update git to use correct author address
Add key for addison
Tweaks for better handling of ssh keys - don't try to kill off existing
agents, just remove their keys.

Exception: if it's just a new tmux pane, don't clear.

Add git review config.
Add a script to fix the prefix if this tmux window is a master
Add widnow renaming shortcut