Linux 4.5 rc3

It's Sunday afternoon, and everything is normal. And that means that
there's a new rc release right on time.

It's slightly bigger than I'd like, but not excessively so (and not
unusually so). Most of the patches are pretty small, although the diff
is utterly dominated by the (big) removal a couple of staging rdma
drivers that just weren't going anywhere. Those removal patches are
90% of the bulk of the diff.

Of the remaining 10%, the rest is still mostly drivers (networking,
gpu, sound, usb), with the rest being miscellaneous other stuff (core
networking, some VM fixes from Andrew, ARM SoC fixes, crypto etc).

So it may not be a tiny rc, but there is also nothing particularly
worrisome in there.

Shortlog appended for people who want to get more of a detail overview,