gh-95174: Move WASIX logic into wasi-env (GH-95320)

wasi-env now sets WASIX flags. This allows us to control all build
parameter for wasm32-wasi buildbot from CPython repository.

Also export and improve SYSROOT parameter.

Christian Heimes committed 3y ago

2833f3798dc3647e850b303a4d0fa00609a0ae9b

Parent: 2361908

Committed by GitHub <noreply@github.com> on 7/27/2022, 1:30:36 PM