When this is merged the changes should probably be backported before the next 0.6.x release unless anything is stopping/not ideal with this pull.

This doesn't close the linked issue (which wants it in diagnostics), but it does log to the console which Distro is being used, which is useful.

Diagnostics excerpt:

{
  "OperatingSystem": {
    "Platform": 4,
    "ServicePack": "",
    "Version": "6.5.5.273",
    "VersionString": "Unix 6.5.5.273"
  }
}

Daemon output:

[RootHub:Debug]	Initialized internal child hubs: HidSharpDeviceRootHub
[Detect:Debug]	Configuration overrides exist: '/home/gonx/git/opentabletdriver/bin/Configurations'
[Platform:Info]	Linux distribution: arch
[Detect:Info]	Searching for tablets...
[Detect:Info]	No tablets were detected.

I personally think it's more interesting to have the diagnostics filled out correctly, but it is a good start.

Superseded by #2944