Valgrind suppressions need updating

[PaulPrice]

BPO	32889
Nosy	@benjaminp, @miss-islington, @PaulPrice
PRs	bpo-32889: update valgrind suppressions #5779 [3.7] bpo-32889: update valgrind suppressions (GH-5779) #5793 [3.6] bpo-32889: update valgrind suppressions (GH-5779) #5794

^{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 = <Date 2018-02-21.06:06:34.937>
created_at = <Date 2018-02-20.21:13:07.444>
labels = ['3.7', '3.8']
title = 'Valgrind suppressions need updating'
updated_at = <Date 2018-02-21.06:31:56.807>
user = 'https://github.com/PaulPrice'

bugs.python.org fields:

activity = <Date 2018-02-21.06:31:56.807>
actor = 'miss-islington'
assignee = 'none'
closed = True
closed_date = <Date 2018-02-21.06:06:34.937>
closer = 'benjamin.peterson'
components = []
creation = <Date 2018-02-20.21:13:07.444>
creator = 'Paul Price'
dependencies = []
files = []
hgrepos = []
issue_num = 32889
keywords = ['patch']
message_count = 4.0
messages = ['312436', '312466', '312470', '312471']
nosy_count = 3.0
nosy_names = ['benjamin.peterson', 'miss-islington', 'Paul Price']
pr_nums = ['5779', '5793', '5794']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue32889'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8']

[PaulPrice]

Using the current valgrind suppressions (Misc/valgrind-python.supp) results in a lot of noise, e.g.:

==2662549== Conditional jump or move depends on uninitialised value(s)
==2662549== at 0x4EFD734: address_in_range (obmalloc.c:1200)
==2662549== by 0x4EFD734: _PyObject_Free (obmalloc.c:1467)
==2662549== by 0x4FAA6A3: block_free (pyarena.c:95)
==2662549== by 0x4FAA6A3: PyArena_Free (pyarena.c:169)

The suppressions are blocking Py_ADDRESS_IN_RANGE, but this function was renamed in 3.6.

[benjaminp]

New changeset ba51880 by Benjamin Peterson (Paul Price) in branch 'master':
bpo-32889: update valgrind suppressions (GH-5779)
ba51880

[miss-islington]

New changeset 69607b4 by Miss Islington (bot) in branch '3.7':
bpo-32889: update valgrind suppressions (GH-5779)
69607b4

[miss-islington]

New changeset 1e8bc25 by Miss Islington (bot) in branch '3.6':
bpo-32889: update valgrind suppressions (GH-5779)
1e8bc25