Add commits cc'd to stable, up to 5.4

 ...plus their obvious dependencies, and some follow-up fixes.
138 files changed
tree: 235ccb716b259a299d87e435e12d9fbcbbb93503
  1. config-3.2/
  2. queue-3.16/
  3. releases/
  4. scripts/
  5. .gitignore
  6. upstream-head