trying to load an extension module.

While at it, also add a proper unittest.skipIf() guard to another test
involving imp.load_dynamic().

Issue #13721: SSLSocket.getpeercert() and SSLSocket.do_handshake() now raise an OSError with ENOTCONN, instead of an AttributeError, when the SSLSocket is not connected.

descriptor supported.

descriptor supported.

that already contains the right news)

than the one merged from 3.2 to match the actual changes here.

libffi to 3.0.13.  (i'm not sure if it is needed anymore but see
issue 10309 for details which makes no mention of upstream; this
change is already in 3.3 and 3.4 but may need reapplying to 2.7
as done here)

  were missing from a messed up merge during the libffi 3.0.13
  import.  the diffs from upstream libffi 3.0.13 are now small.

  were missing from a messed up merge during the libffi 3.0.13
  import.  the diffs from upstream libffi 3.0.13 are now small.