[Checkins] [zopefoundation/keas.profile] 512061: Try to fix PyPy build on Travis

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/keas.profile
  Commit: 51206123f9fd6575db4190f6d763a03d40bd820f
      https://github.com/zopefoundation/keas.profile/commit/51206123f9fd6575db4190f6d763a03d40bd820f
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2013-03-29 (Fri, 29 Mar 2013)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Try to fix PyPy build on Travis

Apparently bin/buildout doesn't know how to restart itself on PyPy.  It
won't need to do that if we ask it to avoid upgrading anything (i.e.
distribute).