Remove CONFINCLUDEDIR, CONFINCLUDEPY, INCLUDEPY, INCLUDEDIR, etc from sysconfigdata

[Zach Pearson]

We pinned setuptools to version 65.1.1 to avoid a change in distutils that ​changed the order of precedence for finding Python headers. Before that change, the includes local to ChimeraX were preferred. After, we always got system Python headers. I ​opened an issue with distutils, requesting that the nearest Python be used, but it's been ​implied that our environment and others like ours are simply misconfigured.

​It does seem to work to just remove the values of the sysconfigdata variables listed in this ticket, though we might need to remove others to get stray library folders out of linkers' paths.

This has come up again today because I received an email from GitHub pointing out a security vulnerability in 65.1.1

We have a script that cleans sysconfigdata of unwanted variables in prereqs/Python; I just propose adding at least these four from the title to it.

[Zach Pearson]

I successfully built ChimeraX with this change and, after going back and building the core again to double-check, I can see that the include directories are correct using the latest setuptools (67.4.0).

Example call:

gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch arm64 -arch x86_64 -g -DMAJOR_VERSION=1 -DMINOR_VERSION=0 -I/Users/zjp/git/rbvi/ChimeraX/ChimeraX.app/Contents/include -Icore_cpp/mac_util/ -I/Users/zjp/git/rbvi/ChimeraX/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c core_cpp/mac_util/module.cpp -o build/temp.macosx-10.9-universal2-cpython-39/core_cpp/mac_util/module.o -std=c++11 -stdlib=libc++ -ObjC++ -std=c++11 -stdlib=libc++ -pipe -fvisibility-ms-compat

[Zach Pearson]

I bumped setuptools after clearing those values from _sysconfigdata.