Created attachment 205622 [details]
Switch MASTER_SITES to HTTPS.
I've hand applied this to my working tree so it should go in along with 8.0.1. It's a little unclear if they will continue using llvm.org for release tarballs. It may be that they move to GitHub as they did with the 8.0.1rc# tarballs.
LLVM has moved releases to GitHub and uses https URLs by default.