Kernel prepatch 4.8-rc5

The 4.8-rc5 kernel prepatch is availablefor testing."So rc5 is noticeably bigger than rc4 was, and my hope last week thatwe were starting to calm down and shrink the releases seems to havebeen premature. [...]Not that any of this looks worrisome per se, but if things don't startcalming down from now, this may be one of those releases that willneed an rc8. We'll see."