* Packaging: simplify Vagrantfile

- Dev: dockerbuilder requires a fake initctl because 'apt-get install devscripts' insists on installing a stupid daemon I never asked for in the first place.

dockerbuilder: upload most recent Ubuntu package (note version FOO might not yet be packaged at tag vFOO)

- Packaging: Fixed Vagrantfile
* Documentation: Updated install instructions

* Packaging: Add 0.1.8 to Ubuntu packaging changelog
* Packaging: Update the Ubuntu maintainer manual

	+ Convenience rules: srcrelease, deps
	- Separate dependency vendoring from building the binary
	  (re-download dependencies with 'make deps')

dockerbuilder: use a pristine GOPATH, with the fresh checkout registered at the right path (for internal submodules)

- Documentation: fixed typo in "Building blocks"

- Runtime: adapt cgroup capability detection to work on Gentoo

+ Add initial Changelog

On Gentoo, the memory cgroup is mounted at /sys/fs/cgroup/memory, but the mount line looks like the following:
memory on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)

(note that the first word on the line is "memory", not "cgroup", but the other essentials are there, namely the type of cgroup and the memory mount option)

hack/dockerbuilder: a standard build environment for building and uploading official binary builds of docker... inside docker

Conflicts:
	docker/docker.go
	docs/sources/installation/archlinux.rst
	docs/sources/installation/index.rst
	docs/sources/installation/ubuntulinux.rst
	runtime.go
	utils.go

Check that the pid in pidfile exists before preventing docker to start

Use aufs to handle parents whiteouts instead of doing it manually

453 generic kernel detection fix