Update libcontainer to 1597c68f7b941fd97881155d7f077852e2914e7b

This commit contains changes for docker:
* user.GetGroupFile to user.GetGroupPath docker/libcontainer#301
* Add systemd support for OOM docker/libcontainer#307
* Support for custom namespaces docker/libcontainer#279, docker/libcontainer#312
* Fixes #9699 docker/libcontainer#308

Signed-off-by: Alexander Morozov <lk4d4@docker.com>
Return usage on parseExec error.

Docker-DCO-1.1-Signed-off-by: Jessica Frazelle <jess@docker.com> (github: jfrazelle)
Merge pull request #9795 from LK4D4/update_libcontainer

Update libcontainer to 1597c68f7b941fd97881155d7f077852e2914e7b
Fix indentation

Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
Merge pull request #9802 from icecrime/9284_tianon_ocd

Fix indentation
Adjust Dockerfile style to be more consistent

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
Merge pull request #9804 from tianon/dockerfile-tweaks

Adjust Dockerfile style to be more consistent
Stefan Banach in names-generator

Signed-off-by: Tomasz Nurkiewicz <nurkiewicz@gmail.com>
Fix names-generator comment about name generation

Signed-off-by: Ankush Agarwal <ankushagarwal11@gmail.com>
Merge pull request #9816 from ankushagarwal/names-generator-comment-correction

Fix names-generator comment about name generation
Merge pull request #9813 from nurkiewicz/banach

Stefan Banach in names-generator
Add CONFIG_POSIX_MQUEUE to check-config.sh

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
Switch names-generator arrays to be long-form

This way, we can embed the link/description lines directly in the array itself, conflicts between PRs to this section are minimized, new PRs are easier to review, and it's a lot easier to notice when people are missing a link/description (like the few that currently are).

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
Add descriptions for bell, lumiere, morse, nobel, ptolemy, and wright

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
Merge pull request #9823 from tianon/CONFIG_POSIX_MQUEUE

Add CONFIG_POSIX_MQUEUE to check-config.sh
Merge pull request #9825 from tianon/long-form-names

Switch names-generator arrays to be long-form
Merge pull request #9792 from jfrazelle/9770-parse-exec-usage

Return usage on parseExec error.