These packages are needed for proper build:

* git-core: to get CRIU version (see Makefile)
* pkg-config, libselinux-dev: to check for selinux
  (see criu/Makefile.config)
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>