Tag build swift-DEVELOPMENT-SNAPSHOT-2016-09-27-a
Merge remote-tracking branch 'origin/swift-3.1-branch' into stable

* origin/swift-3.1-branch:
  [Profile] Remove unused variable
  [Profile] suppress verbose rt message by default
  Correctly escape %.
  profile: add missing include for Windows
  [CMake] Connect Compiler-RT targets to LLVM Runtimes directory