Linux 4.18 Released

One week late(r) and here we are - 4.18 is out there.

It was a very calm week, and arguably I could just have released on
schedule last week, but we did have some minor updates. Mostly
networking, but some vfs race fixes (mentioned in the rc8 announment
as "pending") and a couple of driver fixes (scsi, networking, i2c).
Some other minor random things (arm crypto fix, parisc memory ordering
fix). Shortlog appended for the (few) details.

Some of these I was almost ready to just delay to until the next merge
window, but they were marked for stable anyway, so it would just have
caused more backporting. The vfs fixes are for old races that are
really hard to hit (which is obviously why they are old and weren't
noticed earlier). Some of them _have_ been seen in real life, some of
them probably need explicit help to ever trigger (ie artificial delays
just to show that "yes, this can actually happen in theory").

Anyway, with this, the merge window for 4.19 is obviously open, and
I'll start pulling tomorrow. I already have a couple of dozen pull
requests pending due to the one-week delay of 4.18, but keep them