[libcxx-commits] [libcxx] [libcxx] [test] Quote the python executable in the executor (PR #68208)

[Martin Storsjö via libcxx-commits]

mstorsjo wrote:

I updated the branch so that it uses a proper quote function, and quote both the script and the python executable. The proper python cross platform quoting for shell commands is `subprocess.list2cmdline`, somewhat non-obviously.

https://github.com/llvm/llvm-project/pull/68208