make: Pull in all scripts we need for build

It's damn hard to follow changes in CRIU code which
is not designed well for external use.

So I'm starting to pull in all the pieces needed
to make cpt2 a standalone project.

Everything except protobuf headers should be merged
finally.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Add compiler.h

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
make: Drop CRIUDIR includes

It's unbuildable now, I know.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
make: Semi-raw include of files needed

Now cpt2 builds.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
make: Drop syscalls generation

We don't need it anymore.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
make: Import protobuf files from CRIU

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>