[3.6] bpo-35011: Restore use of pyexpatns.h in libexpat (GH-9939)#9941

miss-islington merged 1 commit intopython:3.6python/cpython:3.6from

miss-islington:backport-9d4712b-3.6miss-islington/cpython:backport-9d4712b-3.6Copy head branch name to clipboard