[3.6 Release] Release Candidate 3 available

Hello all,

Source and binaries for LLVM 3.6.0-rc3 are available at

Many thanks to the testing team who are the ones providing the binaries!

Please try it out, run tests, and file bugs. Release blockers are
tracked by http://llvm.org/PR22374

We are getting very close to the release. I had hoped that rc3 would
be the final candidate, but it didn't turn out that way. I plan to cut
rc4 in less than 24 hours; if there are issues that need to be
resolved before then, please double check that I'm aware.