fix importlib and distutils formatting of platform tag for ARM

13: warn for hmac and hexlify r=ltratt a=nanjekyejoannah This PR adds warnings for the following modules: - `hmac` - `binascii.hexlify` - `binascii.b2a_hex` See the notes below: 1. warn for the 'digest' parameter in hmac in pygrate2 In Python 2: ``` >>> import hashlib >>> import hmac >>> string1 = 'firststring'.encode('utf-8') >>> string2 = 'secondstring'.encode('utf-8') >>> digest = hmac.new(key=string1, msg=string2, digestmod=hashlib.sha256).digest() >>> digest = hmac.new(key=string1, msg=string2).digest() >>> ``` In Python 3: ``` string1 = 'firststring'.encode('utf-8') >>> string2 = 'secondstring'.encode('utf-8') >>> digest = hmac.new(key=string1, msg=string2, digestmod=hashlib.sha256).digest() Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'hmac' is not defined >>> import hashlib >>> import hmac >>> digest = hmac.new(key=string1, msg=string2, digestmod=hashlib.sha256).digest() >>> digest = hmac.new(key=string1, msg=string2).digest() Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/Cellar/python@3.9/3.9.12_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/hmac.py", line 170, in new return HMAC(key, msg, digestmod) File "/usr/local/Cellar/python@3.9/3.9.12_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/hmac.py", line 56, in __init__ raise TypeError("Missing required parameter 'digestmod'.") TypeError: Missing required parameter 'digestmod'. >>> ``` 2. Warn for hexlify In python 2: ``` >>> import codecs >>> hexlify = codecs.getencoder('hex') >>> hexlify(b'Blaah')[0] '426c616168' >>> import binascii >>> binascii.hexlify(b'Blaah') '426c616168' >>> binascii.hexlify('Blaah') '426c616168' >>> ``` In Python 3: ``` >>> import codecs >>> hexlify = codecs.getencoder('hex') >>> hexlify(b'Blaah')[0] b'426c616168' >>> import binascii >>> binascii.hexlify(b'Blaah') b'426c616168' >>> binascii.hexlify('Blaah') Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: a bytes-like object is required, not 'str' >>> ``` Co-authored-by: Joannah Nanjekye <jnanjekye@python.org>

16: Warn for specific thread module methods r=ltratt a=nanjekyejoannah Dont merge until python#13 and python#14 are merged, some helper code cuts across. This replaces python#15 Threading module Notes Python 2: ``` >>> from thread import get_ident >>> from threading import get_ident Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: cannot import name get_ident >>> import threading >>> from threading import _get_ident >>> ``` Python 3: ``` >>> from threading import get_ident >>> from thread import get_ident Traceback (most recent call last): File "<stdin>", line 1, in <module> ModuleNotFoundError: No module named 'thread' > ``` **Note:** There is no neutral way of porting Co-authored-by: Joannah Nanjekye <jnanjekye@python.org>

Fix macos builds

…st round-trips plistlib's _escape() function was normalizing \r\n to \n and \r to \n during XML plist serialization. When the plist was loaded back, the original carriage return characters were lost because expat also normalizes newlines in XML character data. Fix by encoding \r as the XML character reference &python#13; instead of converting it to \n. Character references are not subject to XML newline normalization, so expat correctly decodes &python#13; back to \r, preserving the original data during round-trips.