cgmanager: switch to TLS
cgmanager: switch to TLS

Drop the thread mutex.  Set a (TLS) boolean at container start to
indicate that the connection should be kept open;  set it back to false
only when container start is complete.  Every cgm_ method opens the
connection if not already open, and closes it if cgm_keep_connection
is false.

Signed-off-by: Serge Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>
Acked-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>

ojkastl/lxc_Patches,ojkastl/lxc_Patches,ojkastl/lxc_Patches,ojkastl/lxc_Patches