Improve python310 recipe
Compiles and executes within Redox.
Major outstanding issues:
- CPython relies heavily on dynamically loading objects, which is
currently not working (replicate:
import subprocess
). This is critical as lots of builtin modules require this functionality. - OpenSSL needs to be compiled with 'threads' option to work as a dependency.
CPython cross-build requires the same Python version on the build machine, so the recipe first builds for the current machine and builds again for the Redox target.