[issue29259] Add tp_fastcall to PyTypeObject: support FASTCALL calling convention for all callable objects

[Roundup Robot]

Roundup Robot added the comment:

New changeset 2ccdf2b3819d by Victor Stinner in branch 'default':
Optimize _PyCFunction_FastCallKeywords()
https://hg.python.org/cpython/rev/2ccdf2b3819d

----------
nosy: +python-dev

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29259>
_______________________________________