* bpo-30557: faulthandler now correctly filters and displays exception codes on Windows (#1924)

* bpo-30557: faulthandler now correctly filters and displays exception codes on Windows

* Adds test for non-fatal exceptions.

* Adds bpo number to comment.

* bpo-30557: Fix test_faulthandler (#1969)

On Windows 8, 8.1 and 10 at least, the exit code is the exception
code (no bit is cleared).