Nemo writes:

We still have 18 open reports marked as needing backports to old stable branches, marked 3 as major and 1 (for 1.21.x) as critical. What to do?

What you did earlier today was appropriate -- merge available patches to the relevant branches. Also appropriate: bug Markus or I about these backports. As I posted earlier today, we'll be making point releases for supported versions on the 27th of this month, so there is plenty of time to nag us before the next scheduled point release.

As Siebrand noted it would be good to update the REL NOTES when you do that, but if you don't then we will update them when a release is made.

(Note that I'm not committing to making releasing fixes for the issues that you mentioned since I haven't looked at them yet. They are in queue, though.)

HTH,

Mark.