Use new libcontainer.State API

Docker-DCO-1.1-Signed-off-by: Tibor Vass <teabee89@gmail.com> (github: tiborvass)
Pause/freeze containers during commit

Initiates a pause before committing a container,
adds a pause option to the commit command, defaulting to 'true'.

Fixes bug: #6267
Fixes bug: #3675

Docker-DCO-1.1-Signed-off-by: Eric Windisch <ewindisch@docker.com> (github: ewindisch)
Add FAQ entry about bundled vs packaged libraries

Docker-DCO-1.1-Signed-off-by: Jérôme Petazzoni <jerome@docker.com> (github: jpetazzo)
Merge pull request #6796 from jpetazzo/bundled-vs-packaged

Add FAQ entry about bundled vs packaged libraries
Merge pull request #6785 from tiborvass/use_new_libcontainer_state_api

Use new libcontainer.State API
updated docs & tests

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
Merge pull request #6787 from vieux/pause_commit2

Pause/freeze containers during commit
more docs for dockerignore

Docker-DCO-1.1-Signed-off-by: Tibor Vass <teabee89@gmail.com> (github: tiborvass)
Merge pull request #6798 from tiborvass/docs-dockerignore

More docs for dockerignore
removing the exclaimation mark from our hello-world examples, some users get trapped by the shell

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Lowercase world, because its not important.

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)