indication for TLS/SSL connections.

with server_hostname on handshake.

descriptor 0, 1 or 2 is closed.
The errpipe_write fd will always be >= 3.

descriptor 0, 1 or 2 is closed. (correct fix for 3.4 this time)

Patch by Daniel Urban.

Vajrasky Kok.

EINTR.

tracemalloc in objects destructor

Replace atexit handler with an harcoded C function _PyTraceMalloc_Fini().

causing test_multiprocessing_forkserver and test_multiprocessing_spawn
failures on head (3.4).

causing test_multiprocessing_forkserver and test_multiprocessing_spawn
failures on head (3.4).

descriptor 0, 1 or 2 is closed.

descriptor 0, 1 or 2 is closed.

This fix does not cause any degradation in performance.

MvL would like to be able to preserve CPython's existing clean
uninstall behaviour on Windows before enabling the pip
installation option by default.

This private CLI means running "python -m ensurepip._uninstall"
will remove pip and setuptools before proceeding with the rest
of the uninstallation process.

If the version of pip differs from the one bootstrapped by
CPython, then the uninstallation helper will leave it alone
(just like any other pip installed packages)