[tz] Discrepancies in European part of Russia (and nearby)

[Paul Eggert]

Stepan Golosunov wrote:
> Patches reverting the incorrect change, splitting Asia/Tomsk and
> correcting date of the 2002 change attached.
>
> The first patch should be applied before the 2016b release.

Thanks, I've done that in the experimental version on Github.