use less reflection in command line method invocation
Fixes issues with mounting subdirectories of /mnt in container.

Tested with
mkdir /mnt/data
docker run -v /mnt/data:/mnt/data  -t ubuntu:12.10 touch /mnt/data/bar

Expected /mnt/data/bar on host.
check return value of syscall.Chdir when changing working directory
make copy paste user friendly

copying only the first line killed my sources.list file
c&p improvement for 13.04

first line killed sources list
Add initial init scripts library, including systemd, sysvinit, upstart, and openrc
Update CHANGELOG.md
Re #2137 Note about vagrant dns in the test documentation
Update hack/release.sh process to automatically invoke hack/make.sh and bail on building/testing issues
clean split between errors and output. JSON output always valid
Work around an exotic bug affecting Docker-in-Docker + systemd.
Remove spurious messages, and use proper args expansion.

Also, display some (hopefully helpful) message when no command was given.
Change bundle order, and fix shell array expansion.

I believe that it is helpful to build the binary first. That way,
if you interrupt the tests, you still get a binary to play with.
If you run the tests first and interrupt them, no binary for you!

Also, the second part of this commit is an undeniable proof that
Bash array syntax is nothing else than an elaborate troll by Bash
authors.
Merge pull request #1 from jpetazzo/cherry-on-top-of-hack-release

Cherry on top of hack release
Merge remote-tracking branch 'upstream/master'

Conflicts:
	commands.go
Add "vendor/pkg/" to .gitignore now that we "go test -i"
testing infrastructure, issue #1800: Refactor docker testing using Docker in Docker
Update hack/install.sh with some more Ubuntu-specific installation stuff while we're still on AUFS (installing linux-image-extra-$(uname -r) when we can't find AUFS to try to find AUFS)
Fix github link in docs
fix wrong untag while docker rmi