Tweak commit message
Tweak commit message

If PACKAGES is too long, GitHub rejects it.

{
  "message": "Validation Failed",
  "errors": [
    {
      "resource": "Issue",
      "code": "custom",
      "field": "title",
      "message": "title is too long"
    }
  ],
  "documentation_url": "https://developer.github.com/v3/pulls/#create-a-pull-request"
}

rnestler/apt-package-whitelist,christophgysin/apt-package-whitelist,AlCutter/apt-package-whitelist,travis-ci/apt-package-whitelist,jmerkow/apt-package-whitelist,travis-ci/apt-package-whitelist,Tyrael/apt-package-whitelist,phw/apt-package-whitelist,sternb0t/apt-package-whitelist,jschlyter/apt-package-whitelist,christophgysin/apt-package-whitelist,Tyrael/apt-package-whitelist,AlCutter/apt-package-whitelist,jmerkow/apt-package-whitelist,rnestler/apt-package-whitelist,sternb0t/apt-package-whitelist,jschlyter/apt-package-whitelist,phw/apt-package-whitelist