Add missing patches for Python 3.7/3.8/3.9

[tomkins]

Currently when installing Python 3.7.17 on an Apple Silicon MacBook:

$ pyenv install 3.7.17
python-build: use openssl@1.1 from homebrew
python-build: use readline from homebrew
Installing Python-3.7.17...
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/tomkins/.pyenv/versions/3.7.17/lib/python3.7/ctypes/__init__.py", line 7, in <module>
    from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'
WARNING: The Python ctypes extension was not compiled. Missing the libffi lib?
Installed Python-3.7.17 to /Users/tomkins/.pyenv/versions/3.7.17

After adding the patches:

$ pyenv install 3.7.17
pyenv: /Users/tomkins/.pyenv/versions/3.7.17 already exists
continue with installation? (y/N) y
python-build: use openssl@1.1 from homebrew
python-build: use readline from homebrew
Installing Python-3.7.17...
patching file 'Doc/library/ctypes.rst'
patching file 'Lib/test/test_unicode.py'
patching file 'Modules/_ctypes/_ctypes.c'
patching file 'Modules/_ctypes/callproc.c'
patching file 'Modules/_ctypes/ctypes.h'
patching file setup.py
patching file 'Misc/NEWS.d/next/Core and Builtins/2020-06-30-04-44-29.bpo-41100.PJwA6F.rst'
patching file 'Modules/_decimal/libmpdec/mpdecimal.h'
patching file setup.py
python-build: use readline from homebrew
python-build: use zlib from xcode sdk
Installed Python-3.7.17 to /Users/tomkins/.pyenv/versions/3.7.17

I've copied across the OpenSSL patches for 1.1.1q as well, although that's untested as my current Homebrew OpenSSL is 1.1.1u.

[native-api]

I've copied across the OpenSSL patches for 1.1.1q as well, although that's untested as my current Homebrew OpenSSL is 1.1.1u.

Better replace the 1.1.1q reference with the latest version as of now and get rid of the patches.