[3.12] gh-124448: Update Windows builds to use Tcl/Tk 8.6.15

[zware]

(cherry picked from commit 9d8f2d8)

• Issue: Update bundled Tcl/Tk to 8.6.15 (Windows, macOS installer) #124448

[zware]

@zooba FYI, 8.6.15.1 only contained Tix for amd64. I created 8.6.15.2 with win32 and arm64 using git reset tcltk-8.6.13.0 arm64/tixlicense.terms arm64/lib/tix8.4.3 win32/tixlicense.terms win32/lib/tix8.4.3. Could probably use a sanity check before I merge this :)

[zooba]

I created 8.6.15.2 with win32 and arm64 using ...

Apart from the licenses (whoops), that's the same command I used, so yeah a sanity check would seem necessary! You could just retag 8.6.15.1 though, we don't have any commits using that version yet, so no harm in moving it.

The sanity check should probably be done by someone who knows what Tix is for. Which is not me 🙃

[zware]

Apart from the licenses (whoops)

You got the amd64/tixlicense.terms, which is the only reason I thought to get them for the other two :)

that's the same command I used, so yeah a sanity check would seem necessary!

👍

You could just retag 8.6.15.1 though, we don't have any commits using that version yet, so no harm in moving it.

Tags are cheap and I'm afraid that moving one that has existed over the weekend would bring everyone who has ever cloned the repository out of the woodwork with complaints about the moved tag.

The sanity check should probably be done by someone who knows what Tix is for. Which is not me 🙃

That the tests pass is enough of a confirmation for me that Tix "works" well enough :). I was just concerned that I might have missed something with how the binaries were signed or similar, so your confirmation that a git reset was all that was needed is all I needed. Thanks!