textadept: update to 12.9

[skinchangerdev]

This PR updates Textadept to 12.9 with a significant amount of CMake black magic.

Note that this update includes significant changes, such as:

• A switch to CMake from Unix Makefiles
• A new QT version, which is the default (the GTK version is still available as textadept-gtk)

Testing the changes

• I tested the changes in this PR: YES

Local build testing

• I built this PR locally for my native architecture, (x86_64)

[skinchangerdev]

I'm going to make a PR to integrate the CMakeLists.txt changes upstream eventually (I'm tired right now)

[tranzystorekk]

duplicate of #54629

[Anachron]

This is fine to be merged, I can close my PR, the package is orphaned anyway.

[skinchangerdev]

This is fine to be merged, I can close my PR, the package is orphaned anyway.

Thanks, I'll get to work on this again soon. I mostly just need to fix some build issues and make a PR upstream for that CMakeLists.txt patch.

[skinchangerdev]

Finally got around to working on this, very sorry that it took me so long. I've fixed the cross-build issues, and the package should be fine to merge now. Given that #54629 was closed as it was nearly stale and this PR was created, I think it's fair to reopen this PR.

[skinchangerdev]

@tranzystorekk

[tranzystorekk]

PRs can't be reopened if they were force-pushed to after being closed, you'll have to open a new PR instead

EDIT: hm, or maybe they can, github web UI is so weird

EDIT 2: nevermind, please just open a new PR

[skinchangerdev]

PRs can't be reopened if they were force-pushed to after being closed, you'll have to open a new PR instead

EDIT: hm, or maybe they can, github web UI is so weird

EDIT 2: nevermind, please just open a new PR

Reopened as #61323.