Linux 3.12 rc3

I'm back to a Sunday release schedule, so here it is, rc3.

Nothing really special stands out. There's a fair amount of churn in
mm, which is unusual at this point, but that's all reverts: during the
merge window Andrew sent some changes that were still being discussed,
and we're reverting them for now.

If you ignore the mm changes, the rest looks very normal: the bulk is
drivers (gpu, dm/bcache, usb, sound..), with the usual sprinkling of
architecture (powerpc, x86, arm, mips) and filesystem (udf, xfs,
reiserfs) changes. And some perf tooling.

And we had some performance-tweaking of the new lockref support for
ARM and s390.

On the whole, nothing really appears very scary. Go forth and test,