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**Commit 1:**
[internal] Reject CI builds if any .rej files exist
.rej are the byproduct of failed patches via git-apply or artifacts of
the backporting process through jasper. Any build that has them should
be rejected early.
* Original sha: 55e429cc4f
* Authored by Court Ewing <court@epixa.com> on 2016-03-29T17:24:24Z
