Auto test for p.haul

P.Haul now has a auto-test, that takes a bunch of CRIU's zdtm tests, runs them in a self-made pseudo-container and live-migrates it to the localhost. To play with it do

1. get p.haul sources into some place
2. get criu sources nearby p.haul's (in the same directory) under the criu directory name
3. compile criu with cd criu && make
4. compile p.haul with cd p.haul && make
5. go to p.haul/test/zdtm/ directory and simply run ./run.sh

It will do all the stuff.