Kernel prepatch 5.12-rc5

The 5.12-rc5 kernel prepatch is out fortesting. "So if rc4 was perhaps a bit smaller than average, it looks like rc5 isa bigger than average. We're not breaking any records, but itcertainly isn't tiny, and the rc's aren't shrinking.I'm not overly worried yet, but let's just say that the trend hadbetter not continue, or I'll start feeling like we will need to makethis one of those releases that need an rc8."