add TestContainerOrphaning integration test
prevent orphan
Merge branch 'test-container-orphaning' of https://github.com/gabrtv/docker into prevent_orphan_deletion
discard test output
Wrong HTTP method in events endpoint.
Fix glob expansion for no-cache setting.

On previous version, glob pattern will be expanded to actual file
names when writing setting to etc/apt/apt.conf.d/no-cache.

This patch fixes to quote to work cache clean command properly.
http method typo in documentation for events endpoint (all api versions)
docker-top: improve error message for non-running containers

Signed-off-by: Tzu-Jung Lee <roylee17@gmail.com>
Merge pull request #3309 from apocas/master

Wrong HTTP method in events endpoint. (documentation)
Move utility package 'systemd' to pkg/systemd
Add README to pkg
Merge pull request #3325 from shykes/pkg-systemd

Move utility package 'systemd' to pkg/systemd
Move utility package 'graphdb' to pkg/graphdb
Move utility package 'netlink' to pkg/netlink
Move utility package 'term' to pkg/term
Merge pull request #3304 from vieux/prevent_orphan_deletion

Prevent orphan in docker rmi
Move utility package 'namesgenerator' to pkg/namesgenerator
Merge pull request #3329 from shykes/pkg-netlink

Move utility package 'netlink' to pkg/netlink
Merge pull request #3330 from shykes/pkg-term

Move utility package 'term' to pkg/term
Merge pull request #3331 from shykes/pkg-names

Move utility package 'namesgenerator' to pkg/namesgenerator