Kernel prepatch 4.2-rc7

Linus has released the 4.2-rc7 prepatch,but he's still not sure about whether it will be the last for thisdevelopment cycle. "So this may be the last RC, and it might notbe. It will depend on whether anything more comes up next week, and howgood I feel about things come next Sunday. A part of me is convinced thatall the odd 32-bit compat issues etc fallout is finally fixed, but a partof me is still a bit leery."