Python2 is no longer installed in the new GitHub hosted runners (macos-13) and so we need to manually download the installer from Python's website and install it. Since it seems to run quite fast, not caching the folder fow now.
Had to change the default Python2 dynamic lib location to /Library/Framework/... which is where the installer installs to.
Should warn users that Python2 support could be removed in the future.
Lua
Previously dynamic lib loading implicitly relied on being able to find the lib from /usr/local/lib. Somehow Xcode 15 removed support for that folder when using dlopen(). Modified CI and configure script to allow manually specifying it.
Xcode / Legacy build
GitHub's macos-13 image does not have Xcode 14.0.1 installed. This is the version we need for building legacy builds (targeting macOS 10.9 - 10.12). As such, we need to keep using macos-12 for building legacy builds. Hopefully it won't be deprecated soon as we would need to investigate options for how to build legacy builds.
Fix deprecated C functions using old style declarations to handle new compiler warnings.
Python2
Lua
Xcode / Legacy build
Fix deprecated C functions using old style declarations to handle new compiler warnings.