add boilerplate for the /proc file readdir+reads.
add boilerplate for the /proc file readdir+reads.

Signed-off-by: Serge Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>

ralt/lxcfs,Xeno22/lxcfs,Xeno22/lxcfs,rhatdan/lxcfs,rhatdan/lxcfs,hallyn/lxcfs,evgeni/pkg-lxcfs-debian,ralt/lxcfs,hallyn/lxcfs,evgeni/pkg-lxcfs-debian