[swift-build-dev] Cutting new branch

[Nicole Jacque]

Hi All-

We will be cutting a new branch today: "swift-3.1-branch" in order to begin setting up testing infrastructure and stabilization efforts.  There will be additional information about the release and branching in the near future, however for now, you can safely ignore this branch.  We will be to merging master into the branch at intervals, (probably every 1-2 weeks)  so please continue just landing your changes on master.

Thanks!
Nicole