Linux 5.0 rc4

Another week, another release candidate - this time from home.Nothing particularly stands out, except for the fact that the bulk ofthe pull requests came in late in the week. Which worked out ok, ifonly because it meant I could do a fair chunk of them on my mainmachine rather than on my laptop.And that "most pull requests come in Friday-Saturday" is a prettycommon pattern, so it's not like it's worrisome. People push theirwork for the week to me, and/or just target making the next rc.Whatever the reason, things look pretty normal, and nothing hugestands out.Size-wise, rc4 has a bit more commits that the last few releases havehad at this point, but it's not even remotely a new record size, andnot all that much of an outlier anyway. I _do_ hope that things willstart to calm down for rc5 onwards.All the other statistics look pretty normal too: a bit more than halfthe patch is drivers (networking, sound, tty, usb, gpu, scsi,binderfs, you name it). With the rest being arch updates (x86, arm,arc) headers, some library fixes, core networking and kernel. And someselftest updates, but the tooling changes are much smaller than theywere the last couple of rc's.So everything looks ok. Shortlog appended for people who want to skimthe details.Go test and report any oddities you can find, but I think we're doing fine.                   Linus