Kernel prepatch 7.0-rc6

The 7.0-rc6 kernel prepatch is out for testing. > Anyway, exactly because it's just "more than usual" rather than feeling *worse* than usual, I don't currently feel this merits extending the release, and I still hope that next weekend will be the last rc. But it's just a bit unnerving how this release doesn't want to calm down, so no promises.