[CRIU] [PATCH 0/4] tty, restore orphaned slaves

[Cyrill Gorcunov]

Hi guys, please take a look once time permit.

(For some reason ns tests failed with

	mkdir: cannot create directory `/home/crtools/test/dump/crtools-root.RoxEMH/lib64': File exists

not sure yet why, but on all tests, so it's unrelated
to tty code)