Update libcontainer to 29363e2d2d7b8f62a5f353be333

Signed-off-by: Michael Crosby <michael@docker.com>
pkg/tarsum: avoid buf2 allocation in Read

Docker-DCO-1.1-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
update the cli / man page docs based on what is in master right now

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
Remove internet dependency from TestBuildCacheADD

Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com>
Merge pull request #7597 from crosbymichael/update-libcontainer-aug4

Update libcontainer to 29363e2d2d7b8f62a5f353be333
Fixes "note" blockquote too long [doc, minor]

A "note" block includes too much text, so if you skip over it the next paragraph makes zero sense.
Add GoDoc and Travis build link/images to README

Signed-off-by: Vojtech Vitek (V-Teq) <vvitek@redhat.com>
Merge pull request #7610 from remram44/patch-1

Fixes "note" blockquote too long [doc, minor]
Fix search test for busybox image

Signed-off-by: Michael Crosby <michael@docker.com>
Merge pull request #7628 from crosbymichael/fix-search-test

Fix search test for busybox image
Merge pull request #7604 from SvenDowideit/docs-update

update the cli / man page docs based on what is in master right now
Merge pull request #7613 from VojtechVitek/godoc_travis

Add GoDoc and Travis build link/images to README
Merge pull request #7602 from unclejack/tarsum_garbage_reduction

pkg/tarsum: avoid buf2 allocation in Read
Merge pull request #7608 from LK4D4/remove_internet_dep

Remove internet dependency from TestBuildCacheADD
devmapper: use 'user_xattr' as mountoption for ext4 - fixes #6189

># docker pull centos
># docker run -i -t centos /bin/bash

~~~
bash-4.1# touch file
bash-4.1# setfattr -n user.attr -v 1 file
setfattr: file: Operation not permitted
~~~

With 'user_xattr' as mount option

~~~
bash-4.1# touch file
bash-4.1# setfattr -n user.attr -v 1 file
bash-4.1# getfattr -d -m. file
>#file: file
user.xattr="1"
~~~

Signed-off-by: Harshavardhana <fharshav@redhat.com>
bring in image layer user xattr support - fixes #6189

Signed-off-by: Harshavardhana <fharshav@redhat.com>
handle ERANGE properly Lgetxattr() - fixes #6189

Signed-off-by: Harshavardhana <fharshav@redhat.com>
Update libcontainer related to xattrs - fixes #6189

 - provide Llistxattr to be used inside libcontainer
 - fix ERANGE handling properly for long xattrs

Signed-off-by: Harshavardhana <fharshav@redhat.com>