Bug#595920: lxc-attach infrastructure in kernel 3.8

[Tomas Pospisek <tpo@sourcepole.ch>]

The 3.8 kernel contains the necessary functionality to enable lxc-attach. 
See http://lwn.net/Articles/531381/:

> In earlier kernel versions, it was not possible to use setns() to join 
> mount, PID, and user namespaces, but, starting with Linux 3.8, setns() 
> now supports joining all namespace types.

I'm not sure whether the kernel team has an apropriate bts tag to attach 
to this bugreport to note that once a 3.8 kernel is in debian, then this 
bug can be closed?
*t