* [python3] Move /MACHINE into MSBuild file.
This prevents potential patch application conflicts.
* [python3] Add feature deprecated-win7-support.
This backports the fix for bpo-39401 from the Python 3.8 branch instead
of the one from the Python 3.9 branch, which dropped support for Windows
7.
* [python3] Bump port version.
* [python3] Fix goof in static patch that omitted pathcch.lib.
* x-add-version
* [python3] Revert trivial patch changes
Co-authored-by: Robert Schumacher <roschuma@microsoft.com>
* [python3] Add vcpkg's include directories to the end rather than to the beginning.
This is safe because vcpkg never hydrates python3's $(PySrcDir)\externals directory, so it wasn't using vendored dependencies at all.
* [antlr4] Install antlr headers in antlr4-runtime rather than the root to avoid stomping on common name token.h.
This is consistent with the ubuntu packages.
