Remove unused arg from namespaces.NsEnter

Docker-DCO-1.1-Signed-off-by: Paul Morie <pmorie@gmail.com> (github: pmorie)
Remove FreezerStats.

They are really freezer state and we'll move them through another
interface.

Docker-DCO-1.1-Signed-off-by: Victor Marmol <vmarmol@google.com> (github: vmarmol)
Merge pull request #88 from pmorie/master

Remove unused arg from namespaces.NsEnter
Merge pull request #89 from vmarmol/remove-freezer-stats

Remove FreezerStats.
Remove unsupported file

This is no longer needed and is not properly built with the cross
compile scripts anyways.
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Merge pull request #90 from crosbymichael/cross-compile

Remove unsupported file
Add initial system pkg to libcontainer

Port over console and ptmx code into console package
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Migrate selinux system xattr calls and prctl calls
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Finish removing the dependency on docker/pkg/system

Fixes #92
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Merge pull request #97 from crosbymichael/system-pkg

Remove the dep on dotcloud/docker/pkg/system
Don't set the MTU for loopback interfaces.

Setting the MTU for loopback has a huge performance impact on intra-container
traffic. The loopback interface is not an ethernet interface and does not need
the same limit. with this change I see a 4x speedup for loopback throughput.

Docker-DCO-1.1-Signed-off-by: Tim Hockin <thockin@google.com> (github: thockin)
Merge pull request #98 from thockin/netperf

Don't set the MTU for loopback interfaces.
Remove terminal handling in libcontainer
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Open with NOCTTY and set raw term
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Add resize of term in tty mode
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Don't open slave in parent
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Merge pull request #99 from crosbymichael/improve-term-handling

Remove terminal handling in libcontainer
Add dockerfile
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)
Merge pull request #100 from crosbymichael/add-dockerfile

Add dockerfile
Add linux build tags for selinux
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)