Checkpoint-restore tool v1.2

Hello everyone!

We've been working on making live migration work using CRIU this month, and finally put together all bits and pieces we've met. The significant amount of work in that area was about dump and restore performance.

As the result we have the 1.2 release of CRIU and some initial stuff in the P.Haul project. Other than live migration and performance we have a certain amount of bugs fixed, as usual.

So,
* the detailed changelog is here: http://criu.org/Releases#v._1.2
* the sources here: http://download.openvz.org/criu/criu-1.2.tar.bz2
* docs, news and more at http://criu.org

And the P.Haul stuff is
* docs to grow at http://criu.org/Category:P.Haul
* sources at https://github.com/xemul/p.haul

Have fun!

Thanks,
Pavel