Issue #18784: The uuid module no more attempts to load libc via ctypes.CDLL,
if all necessary functions are already found in libuuid.
Patch by Evgeny Sologubov.
Fix http.server's request handling case on trailing '/'.

Patch contributed by Vajrasky Kok. Addresses Issue #17324
Issue #18945: Add tests for tempfile name collision handling.

Patch by Vlad Shcherbina
Issue #18997: fix ElementTree crash with using pickle and __getstate__.

Based on report and initial patch from Germ?n M. Bravo
Add Germ?n M. Bravo to Misc/ACKS
#18951: use consistent names in unittest docs.
#18981: fix a typo in a comment (noticed by Anoop Thomas Mathew).