CID 1130752:  Dereference after null check  (FORWARD_NULL)

of the context in order to enable certification revocation list (CRL)
checks or strict X509 rules.

was introduced by Issue #18379.

This patch adds support for binary plists on OSX to plistlib (based
on a patch by 'dpounces').

The patch also cleans up the API for the plistlib module.

PyByteArray_Resize() failure: leave the bytearray object in an consistent state.

If growth < 0, handling the memory allocation failure is tricky here because
the bytearray object has already been modified.  If lo != 0, the operation is
completed, but a MemoryError is still raised and the memory block is not
shrinked. If lo == 0, the bytearray is restored in its previous state and a
MemoryError is raised.

Notify the caller of the failure (MemoryError exception).

repr() is no more platform dependent, SipHash has been fixed

big-endian platforms.

Temporary forbidden test_unseekable_incompleted_write fornot compressed 16-
and 32-bit wave file  on big-endian platforms.

big-endian platforms.

Temporary forbidden test_unseekable_incompleted_write fornot compressed 16-
and 32-bit wave file  on big-endian platforms.

and CRL distribution points.

to load CA certificates and CRL from memory. It supports PEM and DER
encoded strings.

variables in option groups, to prevent "uninitialized value" warnings.

provide the same API elements as non-keyed cryptographic hash functions.

module supports digestmod names, e.g. hmac.HMAC('sha1').

The bitshift and xor op for 32bit builds has changed the order of hash values.

Issue #19183: test_gdb's test_dict was failing on some machines as the order or dict keys has changed again.

Python now uses SipHash24 on all major platforms.

Now './configure --silent && make -s' doesn't print any message to stdout or stderr.

"hf" type is INT_PTR, it is used to store an int in _msi.c.