[CRIU] Final (hopefully) inherit-fd patch series

[Adrian Reber]

This got more complicated as expected. See patch number 4 for details.

runc was using inherit-fd to send 'FDs' but it was actually just sending
numbers in the protobuf messages. It worked as it was always 0, 1, 2 and
nothing else.

To not break runc CRIU still treats FDs with 0, 1, 2 special.

I have the necessary runc patches to use inherit-fd with the external
network namespace feature and I have also verified that existing runc
test cases do not break.

		Adrian


 criu/action-scripts.c         | 19 ++++++++-----------
 criu/cr-check.c               | 17 +++++++++++++++++
 criu/cr-service.c             | 38 +++++++++++++++++++++++++++++++++++---
 criu/files.c                  | 10 ++++++++++
 criu/include/action-scripts.h |  5 +++--
 criu/include/files.h          |  1 +
 criu/tty.c                    |  2 +-
 images/rpc.proto              |  6 ++++++
 8 files changed, 81 insertions(+), 17 deletions(-)