to integer PyArg_Parse* format codes into a TypeError.  Add a
DeprecationWarning for floats passed with the 'L' format code, which
didn't previously have a warning.

Also, add a note to the docs about the better behavior of T_OBJECT_EX as
compared to T_OBJECT.

pymath.c to Modules/_math.c.

in a Py_ssize_t, not an int.

arithmetic.

compiler_add_o, use copysign instead of examining the first and last
bytes of the double.  The latter method fails for little-endian
ARM, OABI, where doubles are little-endian but with the words swapped.