crowbar/crowbar — pull request #1739 by aspiers (2013-03-07 00:20:45+00:00)
Title: Various Travis-motivated tweaks

* document how to set up Travis commit-bot node
* fix travis-ci/update-git.sh exit code
* don't require root to build a test environment
* doc/devguide: flesh out and align lists of dev dependencies
* build_lib.sh: refactor output functions and add warn()
* dev: make test_prereqs_installed() more helpful