PyModule_AddIntConstant() wraps >=2^31 values when long is 4 bytes

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2016-09-20.15:28:39.724>
labels = ['type-bug']
title = 'PyModule_AddIntConstant() wraps >=2^31 values when long is 4 bytes'
updated_at = <Date 2016-09-20.18:31:24.540>
user = 'https://github.com/altendky'

bugs.python.org fields:

activity = <Date 2016-09-20.18:31:24.540>
actor = 'altendky'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2016-09-20.15:28:39.724>
creator = 'altendky'
dependencies = []
files = []
hgrepos = []
issue_num = 28215
keywords = []
message_count = 5.0
messages = ['277036', '277044', '277051', '277052', '277055']
nosy_count = 3.0
nosy_names = ['vstinner', 'christian.heimes', 'altendky']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue28215'
versions = ['Python 3.5']