Issue #14110: Fix test failures on FreeBSD if the user is in the wheel group.
Issue #16987: Fix definition of SHLIB_EXT.
Remove outdated statement
Remove outdated statement
Issue #11870: Skip test_3_join_in_forked_from_thread() on HP-UX.
check windows fd validity (closes #16992)
math.fsum docs did not show up because of a misplaced testsetup directive
math.fsum docs did not show up because of a misplaced testsetup directive
(merged 3.2 fix)