hack/PACKAGERS.md: libdevmapper
Factor cache-probing logic out of buildfile.commit() and CmdRun().
Record added-tree sha256 in buildfile.CmdAdd, probe and use cache.
Add testcases for ADD caching, closes #880.
Add self to AUTHORS.
Add CHANGELOG.md entry for ADD caching.
Add arch/os info to user agent (Registry)
Add dynamic os/arch detection to Images
add TestContainerOrphaning integration test
Added a note about a networking work around.

An additional flag to limit the networking MTU is required in three Compute Engine zones for reliable networking from inside the docker container. Added a warning to that effect to the QuickStart guide.
Update MTU work-around to use the new -mtu flag
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.
API documentation update for Privileged

The 1.7 API docs show the ability to pass Privileged
when creating a container. This is not supported as.
Privileged is now part of hostConfig and can only be
passed when starting a container.

This fixes the documentation issue.
Minor style cleanups to the API spec docs
Merge pull request #3321 from jamtur01/apiclean

Minor style cleanups to the API spec docs
Merge pull request #3320 from jamtur01/privapi

API documentation update for Privileged