[PATCH user-cr 2/2] add nsexeccwp to test clone-with-pids

[Serge E. Hallyn]

Quoting Oren Laadan (orenl at cs.columbia.edu):
> 
> Ok, will add this to user-cr (v19-rc2).
> 
> BTW, where is the original nsexec source maintained ?

It isn't really 'maintained'.  Used to be kept at lxc.sf.net, and
right now a copy is in the cr_tests git tree.

-serge