Updating to thunderbird 45.8.0

[Guido Günther <agx@sigxcpu.org>]

Hi,
it would be great if you could test the icedove / thunderbird packages at:

    https://people.debian.org/~agx/icedove-lts/

These include the icedove → thunderbird migration.

We have one issue in wheezy when updatig to thunderbird in wheezy: The
following dictionary packages have a unversioned conflict on
thunderbird:

  hunspell-da
  hunspell-en-ca
  hunspell-en-us
  hunspell-fr
  hunspell-hu
  hunspell-ne
  hunspell-ro
  hunspell-sh
  hunspell-sr
  hunspell-uz
  hunspell-vi

and therefore get removed during the update.  They're from
openoffice.org-dictionaries and uzbek-wordlist. O.k. to drop the
dependency and upload them to wheezy-security?

Cheers,
 -- Guido