[$] 5.7 Merge window part 1

As of this writing, 7,233 non-merge changesets have been pulled into themainline repository for the 5.7 kernel development cycle - over the courseof about three days. If current world conditions are slowing down kerneldevelopment, it would seem that the results are not yet apparent at thislevel. As usual, these changesets bring no end of fixes, improvements, andnew features; read on for a summary of what the first part of the 5.7 mergewindow has brought in.