[libcxx-dev] [8.0.0 Release] rc1 has been tagged

[Hans Wennborg via libcxx-dev]

Dear testers,

8.0.0-rc1 was just tagged (from the branch at r351980).

It took a little longer than planned, but it's looking good.

Please run the test script, share your results, and upload binaries.

I'll get the source tarballs and docs published as soon as possible,
and binaries as they become available.

Thanks,
Hans