LibUp

We need a utility/tool to semi-automatically manage library upgrades instead of developers (aka Legoktm) running scripts on their laptops.

Basic requirements:
 * Does not run under Legoktm's gerrit account
 * Pick a few canary repositories to do the upgrade first, then submit patches to bulk upgrade the rest
 * Ability to specifically pick what library to upgrade
 * All submitted patches use the "bump-dev-deps" topic
 * Web interface for everything!!11
 * Discovers new repositories immediately instead of a hardcoded list

Cool features:
 * Know which repos are going to fail the upgrade beforehand