Building today's snapshot of GDB with MinGW

[Joel Brobecker]

Hi Eli,

> Yet another problem, which I'm not yet sure whether it's specific to
> MinGW or to Windows XP, is still unfolding:
> 
>   https://osdn.net/projects/mingw/lists/archive/users/2020-June/000541.html
> 
> It currently makes me unable to run the built GDB on Windows XP, but I
> can run it on newer versions of Windows.  So this is not a blocking
> problem.

I thought we dropped support for Windows XP? I think that is
a reasonable assumption, considering how long ago MS dropped
support for that version.

-- 
Joel