Mark pkgbuild/pkg/intl as failing with repo packages.

Mark pkgbuild/pkg/intl as failing with repo packages.

This started failing after the pubspec update here:
https://code.google.com/p/dart/source/detail?r=37892

Filed: http://dartbug.com/19782 to track this

Committed: https://code.google.com/p/dart/source/detail?r=37930

[ricow1, 2014-07-02 05:58:16]

tbr

[ricow1, 2014-07-02 05:58:26]

Committed patchset #1 manually as r37930 (presubmit successful).

[kasperl, 2014-07-02 06:29:52]

LGTM.