[Checkins] [zopefoundation/Acquisition] 529446: - tweaks to appveyor config

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Acquisition
  Commit: 529446828d17ab37cb055807c8cfa5794546a525
      https://github.com/zopefoundation/Acquisition/commit/529446828d17ab37cb055807c8cfa5794546a525
  Author: Jens Vagelpohl <jens at netz.ooo>
  Date:   2017-11-27 (Mon, 27 Nov 2017)

  Changed paths:
    M appveyor.yml

  Log Message:
  -----------
  - tweaks to appveyor config