Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when trying to pack a negative (in-range) integer.

Patch by Christoph Gohlke.
Closes #7639.

Patch by Ben Hayden.

The options listed in the table are now links to their documentation,
and the table uses compact markup to make it easier to read and edit.
First proposed in #10998.

This patch doesn't quite fix the 'run in a VM with Samba share'
timing problem, but it should at least make it better.

Algorithm and initial patch by Michael Henry.

Patch by Michael Henry.

Issue #10610: Document that int(), float(), and complex() accept numeric literals with the Nd property.

on Windows.  Issue3851.

doesn't have PY_SSIZE_T_CLEAN define and the size doesn't fit in an int
(length bigger than 2^31-1 bytes).

for expiration year greater than 2038 on 32-bit systems.

Changeset ab27f16f707a was messed up by a rebase (as were
959f666470cc and 9d1b1a95bc8f) and the patch only got applied
to default.