Kernel prepatch 4.7-rc4

The 4.7-rc4 prepatch is now available for testing. Linus Torvalds said that it is "pretty small" with "nothing particularly worrisome". The development cycle proceeds apace with the usual sorts of changes: "The statistics look very normal: about two thirds drivers, with the rest being half architecture updates and half "misc" (small filesystem updates,. some documentation, and a smattering of patches elsewhere)."