[Checkins] [zopefoundation/ExtensionClass] 92d70a: try to fix travis build

[GitHub]

  Branch: refs/heads/davisagli-pure-py
  Home:   https://github.com/zopefoundation/ExtensionClass
  Commit: 92d70ac031b33f5433446670be407888df08f025
      https://github.com/zopefoundation/ExtensionClass/commit/92d70ac031b33f5433446670be407888df08f025
  Author: David Glick <david at glicksoftware.com>
  Date:   2013-03-20 (Wed, 20 Mar 2013)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  try to fix travis build