[3.10] bpo-44246: Restore compatibility in entry_points (GH-26468) (GH-26471)

* [bpo-44246](): Entry points performance improvements.

From importlib_metadata 4.3.1.

* [bpo-44246](): Sync with importlib_metadata 4.4
(cherry picked from commit c34ed08d975fb7daa7b329f7c631647782290393)


Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>

Automerge-Triggered-By: GH:jaraco

Miss Islington (bot) committed 4y ago

7207203e1d71e4bf65e5b4991f60e7dc1e35e813

Parent: d1480ad

Committed by GitHub <noreply@github.com> on 5/31/2021, 4:41:55 PM