Add version information for components we depend on.

Sample output:
Version: {KernelVersion:3.11.0-17-generic ContainerOsVersion:Ubuntu 14.04 LTS DockerVersion:1.0.0}

This is the start of the debug page. Still need to add cgroup and namespaces status plus the final debug page.
uname.Release is int8[]. Direct conversion doesn't work.

For local i, I thought the preferred way was to not track a variable if you don't absolutely need it.
As long as we need to initialize the outer i, we can just use that.