SCons 4.8.0 breaks the current build files

[TCROC]

godot-nir-static can no longer be built with the SCons 4.8.0 update. It appears that wildcard imports no longer work. So things like

from SCons.Variables import *

Won't import BoolVariable and such.

This has been recently discovered on this StackOverflow question: https://stackoverflow.com/questions/78746956/error-name-boolvariable-is-not-defined-when-using-scons-on-godot-with-c

And this blog: https://devcodef1.com/news/1330890/godot-c-error-undefined-boolvariable-in-scons

Note that the only thing in the blog that discusses this error is the title. Then it rambles on about booleans, gdextension, and c++ bindings. I'm guessing it was probably written by AI or something. Impressive that it somehow caught the issue tho! Even tho the proposed answer is wildly incorrect.

The solution is 1 of 2 things:

1. Require users to be on SCons 2.7.0 or earlier. (I don't reccomend this approach. In my experience, locking in on old versions of software eventually creates future and more challenging headaches).
2. Change all wildcard imports to explicit imports.

Here are some areas that are affected:

godot-nir-static/godot-tools/windows.py

Line 6 in 27a49f8

from SCons.Variables import *

godot-nir-static/godot-tools/targets.py

Line 4 in 27a49f8

from SCons.Variables import *

Also, os now needs to be explicitly imported.

I actually originally reported this over here: godotengine/godot#94410. And as I was grabbing code examples, I realized most (maybe all) examples were from this godot-nir-static repo and the mesa submodule