Merge branch 'master' of https://github.com/dotcloud/docker
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/dotcloud/docker
Some changes to semantics around tagging, detaching.

Tried to clarify some of the semantics regarding --tag and renaming etc.
Added some text clarifying how to detach from a running containers.
Fixed a bug that reference /varlog instead of /dev/log.

Docker-DCO-1.1-Signed-off-by: William Henry <whenry@redhat.com> (github: ipbabble)

Changes to be committed:
	modified:   docker-attach.1.md
	modified:   docker-build.1.md
	modified:   docker-run.1.md
	modified:   docker-tag.1.md
Fixed some typos in docker-build.

Docker-DCO-1.1-Signed-off-by: William Henry <whenry@redhat.com> (github: ipbabble)

 Changes to be committed:
	modified:   contrib/man/md/docker-build.1.md
Fixed some typos and other issues from ostezer comments.

Docker-DCO-1.1-Signed-off-by: William Henry <whenry@redhat.com> (github: ipbabble)

 Changes to be committed:
	modified:   contrib/man/md/docker-build.1.md
	modified:   contrib/man/md/docker-run.1.md
	modified:   contrib/man/md/docker-tag.1.md
Changed the term rename to alias etc.

Docker-DCO-1.1-Signed-off-by: William Henry <whenry@redhat.com> (github: ipbabble)

 Changes to be committed:
	modified:   contrib/man/md/docker-tag.1.md
Adding percpu usage to cgroup stats reported by libcontainer.

Docker-DCO-1.1-Signed-off-by: Vishnu Kannan <vishnuk@google.com> (github: vishh)
Aux functions for build testing

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
More verbose build tests

I've decided that custom asserts only hide the meaning of tests
Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
Move build cache tests to integration-cli

Docker-DCO-1.1-Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com> (github: LK4D4)
add proto validation at parse

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
add volumes back to inspect

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
Merge pull request #6169 from vieux/add_volumes_inspect_back

add volumes back to inspect
Add redirect and env proxy support to docker login

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
Merge pull request #6153 from vishh/stats1

Add per cpu usage to libcontainer  stats
Merge pull request #6168 from vieux/add_proto_validation

add proto validation at parse
Merge pull request #6056 from ipbabble/master

Made fixes to man pages to remove some ambiguities and typos
Merge pull request #6143 from LK4D4/move_some_more_tests_to_cli

Move some more tests to integration cli
Ensure that ownership and perms are copied to volume

This only works if the file or dir is already created in
the image before setting it to be a volume.  There is no way around this
because we don't have the data avaliable to set the volume at the
beginning of the dockerfile
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)