MERGE: Emergency fix for #13803 bootstrap issue: Under Solaris, distutils doesn't include bitness in the directory name

Emergency fix for #13803 bootstrap issue: Under Solaris, distutils doesn't include bitness in the directory name

Original patch by Amaury Forgeot d'Arc.

(prelude to issue #6531).

(prelude to issue #6531).

PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS,
PyDateTime_DELTA_GET_MICROSECONDS.

Please use them instead of directly accessing PyDateTime_Delta struct members.

Patch by Oleg Plakhotnyuk.

Patch by Oleg Plakhotnyuk.

The PyCursesWindow_getsets array was introduced without sentinel in c3581ca21a57.

More descriptive names are now used in order to make tracebacks
more readable.

change).  configure will be regenerated in the next commit.