Kernel prepatch 4.1-rc5

The fifth 4.1 prepatch is out for testing."So we're on schedule for a normal 4.1 release, if it wasn't for thefact that the timing looks like the next merge window would hit our yearlyfamily vacation. So we'll see how that turns out, I might end up delayingthe release just to avoid that (or just delay opening the mergewindow)."