Add ability to force removal of running container via docker rm -f

Docker-DCO-1.1-Signed-off-by: Brian Goff <cpuguy83@gmail.com> (github: cpuguy83)
Change mustn't to must not

mustn't is ambiguous.  It may mean "you don't need to" even when it's not a tag question.  See prose:

http://books.google.cz/books?id=otFPvwLG524C&pg=PA241&lpg=PA241&dq=mustn%27t+trouble+yourself&source=bl&ots=vjgh7n-yyW&sig=LBQAwlZu3GxI5YzvRAXFow4hE1U&hl=en&sa=X&ei=a14XU9vxB4SBywOPz4HwDw&ved=0CDQQ6AEwAg#v=onepage&q=mustn%27t%20trouble%20yourself&f=false

http://www.nytimes.com/books/first/m/maynard-home.html (search for mustn't)

We mustn't argue over grammar.

See: https://github.com/dotcloud/docker/pull/4473

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: timthelion)
Return correct process pid for lxc

Fixes #2875
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
libcontainer: Don't use UsetCloseOnExec, it is racy

We can't keep file descriptors without close-on-exec except with
syscall.ForkLock held, as otherwise they could leak by accident into
other children from forks in other threads.

Instead we just use Cmd.ExtraFiles which handles all this for us.

This fixes https://github.com/dotcloud/docker/issues/4493

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Merge pull request #4474 from timthelion/master

Change mustn't to must not
Merge pull request #4498 from alexlarsson/fix-cloexec-race

libcontainer: Don't use UsetCloseOnExec, it is racy
remove dbus from apparmor profile

This removes the dbus entry from the apparmor profile Docker creates.

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Use CGO for apparmor profile switch

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Create a -G option that specifies the group which unix sockets belong to.

Docker-DCO-1.1-Signed-off-by: Evan Krall <krall@yelp.com> (github: EvanKrall)
Merge pull request #4503 from unclejack/attempt_to_fix_apparmor_profile

remove dbus from apparmor profile for Ubuntu 12.04
Merge pull request #3612 from EvanKrall/specify_socket_group

Create a -G option that specifies the group which unix sockets belong to...
Added Docker-PHP to the list of client libs

Docker-DCO-1.1-Signed-off-by: Geoffrey Bachelet <geoffrey.bachelet@gmail.com> (github: ubermuda)
Add buildflags to allow crosscompilation for apparmor

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Update build tags such that we can properly compile on all platforms (especially for packagers), and updated hack/PACKAGERS.md to mention the DOCKER_BUILDTAGS variable that will need to be set for binaries that might be used on AppArmor (such as Debian and especially Ubuntu)

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Merge pull request #7 from tianon/fix-hack-tags

Update build tags such that we can properly compile on all platforms
Fixed installmirrors ref

Nested inline markup is not (yet) possible: http://stackoverflow.com/a/9645684
Merge pull request #4506 from creack/fix_apparmor

Use CGO for apparmor profile switch
Merge pull request #3959 from cpuguy83/3958_add_ability_to_remove_running_container_in_single_command

Add ability to force removal of running container via docker rm -f
Merge pull request #4488 from crosbymichael/return-correct-lxc-pid

Return correct process pid for lxc
Fix name parameter

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)