install.sh (get.docker.io) aufs comment updated.

devicemapper has landed, but the TODO hasn't been actioned presumably
because aufs is still preferred over devicemapper when available[1].

Comment updated accordingly.

Citation [1]: https://github.com/crosbymichael/docker/blob/267ca39921c35826ccbdb84fbbc0690bfef385d7/runtime/graphdriver/driver.go#L40-L46

Docker-DCO-1.1-Signed-off-by: Paul Annesley <paul@annesley.cc> (github: pda)
Merge pull request #4842 from pda/installer-devicemapper-comment

Update AUFS comment in install.sh
Merge pull request #4794 from alexlarsson/dm-better-shutdown

devicemapper: Better/faster shutdown
Merge pull request #4628 from kippandrew/port-allocator

Fix port collision with dynamically allocated ports
Merge pull request #4840 from vbatts/vbatts-load_from_input

docker load: add --input flag
Bump to version v0.9.1

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)

Conflicts:
	VERSION
Change version to 0.9.1-dev

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Return error when existing bridge does not match ip
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
typo fix
authors update
Include contributed completions in ubuntu PPA

Docker-DCO-1.1-Signed-off-by: Paul Jimenez <pj@place.org> (github: pjz)
Fix fish completion when having alias on awk or grep

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume@charmes.net> (github: creack)
Merge pull request #4855 from unclejack/update_release_v0.9.1

Update master for release 0.9.1
This patch adds SELinux labeling support.

docker will run the process(es) within the container with an SELinux label and will label
all of  the content within the container with mount label.  Any temporary file systems
created within the container need to be mounted with the same mount label.

The user can override the process label by specifying

-Z With a string of space separated options.

-Z "user=unconfined_u role=unconfined_r type=unconfined_t level=s0"

Would cause the process label to run with unconfined_u:unconfined_r:unconfined_t:s0"

By default the processes will run execute within the container as svirt_lxc_net_t.
All of the content in the container as svirt_sandbox_file_t.

The process mcs level is based of the PID of the docker process that is creating the container.

If you run the container in --priv mode, the labeling will be disabled.

Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
Follow symlinks inside container root for build's ADD
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Strip comments before parsing line continuations

Fixes #3898
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Fix commit and import when no repository is specified
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge branch 'master' into pluginflag

Conflicts:
	pkg/cgroups/cgroups.go
	pkg/libcontainer/nsinit/exec.go
	pkg/libcontainer/nsinit/init.go
	pkg/libcontainer/nsinit/mount.go
	runconfig/hostconfig.go
	runconfig/parse.go
	runtime/execdriver/driver.go
	runtime/execdriver/lxc/lxc_template.go
	runtime/execdriver/lxc/lxc_template_unit_test.go
	runtime/execdriver/native/default_template.go
	runtime/execdriver/native/driver.go

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Fix compile and unit test errors after merge
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Update lxc to use opts for selinux labels
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)