Report details of excess arguments in object_new & object_init

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2017-09-20.05:17:57.406>
labels = ['type-feature']
title = 'Report details of excess arguments in object_new & object_init'
updated_at = <Date 2017-09-20.06:14:25.997>
user = 'https://github.com/ncoghlan'

bugs.python.org fields:

activity = <Date 2017-09-20.06:14:25.997>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2017-09-20.05:17:57.406>
creator = 'ncoghlan'
dependencies = ['31506']
files = []
hgrepos = []
issue_num = 31527
keywords = []
message_count = 3.0
messages = ['302591', '302592', '302597']
nosy_count = 2.0
nosy_names = ['ncoghlan', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'needs patch'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue31527'
versions = []