This is mostly bugfix and improvements release.
Nonetheless, some new features exists, the most interesting are:

  * proper COW mappings handling
  * full packet sockets support, thus supporting the tcpdump tool
  * the --shell-job option, which makes it possible to dump apps
    launched from one shell and restore them in another

Some features are available with the custome kernel, but the good
news is that now _all_ of the patches we need are in one of the
-next trees or in the -mm one, and thus have good chances to get
merged in 3.8 (or soon after it).
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>