git: alias rlog

Note: requires git v1.8.2-rc0
	Color specifiers, e.g. "%C(blue)Hello%C(reset)", used in the "--format="
	option of "git log" and friends can be disabled when the output is not
	sent to a terminal by prefixing them with "auto,", e.g.
	"%C(auto,blue)Hello%C(auto,reset)".
git: alias.amend = commit --amend -v