Fix dyntest problems finding dockerinit

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Add "Conflicts" to our lxc-docker package to make it more clear that we can't/shouldn't be installed alongside either "docker" or "docker.io"

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Merge pull request #4206 from tianon/ubuntu-conflicts

Add "Conflicts" to our lxc-docker package
Merge pull request #4205 from tianon/fix-dyntest

Fix dyntest problems finding dockerinit
Merge branch 'master' into bump_v0.8.1

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #4145 from SvenDowideit/redo-python-example

touch up the examples
Merge pull request #2980 from SvenDowideit/1439-add-registry-repository-terms

my attempt to disentagle repository and registry
Merge pull request #4147 from float64/patch-1

Env Clarification
Add extra info regarding docker run funcationality

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)
Merge pull request #4114 from SvenDowideit/update-sshd-example

update the sshd example to use just a Dockerfile
Bump to version 0.8.1
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #4210 from cpuguy83/4208-update_docs_to_better_explain_docker_run

Add extra info regarding docker run funcationality
Merge remote-tracking branch 'origin/release' into merge_release_v0.8.1

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Change version to v0.8.1
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #4207 from crosbymichael/bump_v0.8.1

Bump to version 0.8.1
Merge pull request #4218 from crosbymichael/merge_release_v0.8.1

Merge release v0.8.1
Merge pull request #4011 from crosbymichael/add-netlink-functions

Add more netlink functions
Merge pull request #4173 from SvenDowideit/add-most-spacing-to-headers

add a little space above h2->h6 - it gets a bit dense in there when there are lots of steps
we moved the repo

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Merge pull request #4223 from SvenDowideit/update-boot2docker-repo

we moved the boot2docker repo