Closes #11279: test_posix and lack of "id -G" support - less noise required? (Solaris)
MERGE: Closes #11279: test_posix and lack of "id -G" support - less noise required? (Solaris)
asyncio: sync with Tulip, add a new asyncio.coroutines module
(Merge 3.4) asyncio: sync with Tulip, add a new asyncio.coroutines module