Also fixes error in 'kill' target (already fixed in 2.7, somehow the fix
didn't make it to this branch).

Don't rely on end of line. Open files in text mode, not in binary mode.

rounding

used.

* initialize numerator on overflow error ensure that numerator is smaller than
* denominator.

Issue #23517: the change broke test_datetime. datetime.timedelta() rounding
mode must also be changed, and test_datetime must be updated for the new
rounding mode (half up).

datetime.datetime.utcfromtimestamp() now rounds to nearest with ties going away
from zero, instead of rounding towards minus infinity (-inf), as Python 2 and
Python older than 3.3.

Change also _PyTime_FromSeconds() assertion to ensure that the _PyTime_t type
is used.

Move code to convert double timestamp to subfunctions.

Patch from Mattip.