Based on a patch by Tim Lesher.

The tests no longer attempt to figure out if a soundcard or particular
system sounds are available.  Instead, it just tries everything and
accepts RuntimeError as a flavor of success.

I forgot to remove this function, I made a mistake in my revert.

Patch from Armin Rigo.

Patch from Armin Rigo.

Also, don't run it if 'gui' is not requested.  Patch by Xiang Zhang.

Issue 27921: Remove backslash from another f-string. I'll revert this change before beta 2. I also need to look in to why test_tools/test_unparse fails with the files that are now being skipped.

Issue #11734: Add support for IEEE 754 half-precision floats to the struct module. Original patch by Eli Stevens.