Provide an API to help debug super().__getattribute__ results

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2016-05-05.01:43:34.413>
labels = []
title = 'Provide an API to help debug super().__getattribute__ results'
updated_at = <Date 2016-05-05.17:46:22.435>
user = 'https://github.com/ncoghlan'

bugs.python.org fields:

activity = <Date 2016-05-05.17:46:22.435>
actor = 'rhettinger'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2016-05-05.01:43:34.413>
creator = 'ncoghlan'
dependencies = []
files = []
hgrepos = []
issue_num = 26961
keywords = []
message_count = 6.0
messages = ['264869', '264875', '264877', '264880', '264907', '264909']
nosy_count = 4.0
nosy_names = ['rhettinger', 'ncoghlan', 'doughellmann', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue26961'
versions = ['Python 3.6']