Linux 4.6 rc4 released

It's been a fairly calm week, and rc4 is not all that big. Nor is
there anything particularly scary in there.

Changes all over the tree, with drivers (40%) and architecture fixes
(30%) being the bulk of it. The rest is scattered all over, but it's
all pretty small. In fact, the "VM fixes" show up as 5+% of the patch,
but that's literally just because we got rid of the conversion-time
hack to have a couple of different calling conventions for

So there really isn't anything particularly interesting here. Just
like I like it in the rc series. Let's hope it stays that way.

Shortlog appended for people who are having a hard time falling asleep.