Fix #9923: mailcap now uses the OS path separator for the MAILCAP envvar. Not backported, since it could break cases where people worked around the old POSIX-specific behaviour on non-POSIX platforms.

Fix #12835: prevent use of the unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets (Patch by David Watson)

-j doesn't pass the memlimit on to child processes, so this doesn't work at
present, and even if it did, running multiple bigmem tests at once would
usually not be desirable (since you generally want to devote as much of the
available RAM as possible to each test).

-j doesn't pass the memlimit on to child processes, so this doesn't work at
present, and even if it did, running multiple bigmem tests at once would
usually not be desirable (since you generally want to devote as much of the
available RAM as possible to each test).

The doc already points to argparse.

Initial patch by Yue Shuaijie.

to be used if the private key is encrypted.  Patch by Adam Simpkins.

automatic storage class.

by Joel Stanley.

See the distutils commit message for more detail.

- First, support.fixup_build_ext (already used to set proper
  library_dirs value under Unix shared builds) gains the ability to
  correctly set the debug attribute under Windows debug builds.

- Second, the filename for the extension module gets a _d suffix under
  debug builds.

- Third, the test code properly puts our customized build_ext object
  into an internal dictionary to make sure that the install command will
  later use our object instead of re-creating one.  That’s the downside
  of using low-level APIs in our test code: we have to manually push
  knobs and turn handles that would otherwise be handled behind the
  scenes.

Thanks to Nadeem for the testing.

Also added some tests.