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
Merge pull request #6056 from ipbabble/master

Made fixes to man pages to remove some ambiguities and typos