ctypes: getbuffer() never provides strides

[skrah]

BPO	12851
Nosy	@amauryfa, @abalkin, @meadori
PRs	gh-57060: populate Py_buffer strides field for ctypes arrays. #4714

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2011-08-29.09:58:42.469>
labels = ['extension-modules', 'type-bug']
title = 'ctypes: getbuffer() never provides strides'
updated_at = <Date 2019-03-08.16:39:00.181>
user = 'https://github.com/skrah'

bugs.python.org fields:

activity = <Date 2019-03-08.16:39:00.181>
actor = 'SilentGhost'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2011-08-29.09:58:42.469>
creator = 'skrah'
dependencies = []
files = []
hgrepos = []
issue_num = 12851
keywords = ['patch']
message_count = 2.0
messages = ['143135', '221560']
nosy_count = 3.0
nosy_names = ['amaury.forgeotdarc', 'belopolsky', 'meador.inge']
pr_nums = ['4714']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue12851'
versions = ['Python 3.4', 'Python 3.5']

[skrah]

PyCData_NewGetBuffer() must provide strides information if requested,
e.g. in response to a PyBUF_FULL_RO request.

[BreamoreBoy]

@Stefan do you want to follow this up?