bpo-34530: Fix distutils find_executable() (GH-9049)


distutils.spawn.find_executable() now falls back on os.defpath if the
PATH environment variable is not set.
(cherry picked from commit 39487196c87e28128ea907a0d9b8a88ba53f68d5)

Co-authored-by: Victor Stinner <vstinner@redhat.com>
3 files changed