[CRIU] CRIU support for ARM

[Alexander Kartashov]

Dear colleagues,

This is a preliminary version of the CRIU support for ARM
intended to demonstrate usage of features introduced 
by the previous patchset.

Known issues:

* The following tests fail for an unknown reason:
  - static/cow01,
  - static/file_fown,
  - static/ipc_namespace,
  - static/shm,
  - transition/ipc.

* The following tests fail because test skipping doesn't work
  properly: if a test is skipped it is reported as failed:
  - static/fpu00,
  - static/fpu01,
  - static/mmx00,
  - static/sse00,
  - static/sse20.

--
Sincerely yours,
Alexander Kartashov