[patch, testsuite] Fixes for gdb.python tests on remote Windows host

[Christian Biesinger via gdb-patches]

Do the mingw checks in this patch also need to consider cygwin? E.g.:
This GDB was configured as "x86_64-pc-cygwin".

On Mon, Aug 12, 2019 at 5:20 PM Sandra Loosemore
<sandra@codesourcery.com> wrote:
>
> The attached patch fixes a bunch of FAILs and ERRORs I've seen in
> gdb.python tests running on remote Windows host.  As noted in the commit
> message, the fixes are mostly obvious and repetitive;  e.g., remember to
> copy the .py script to the remote host before trying to source it.
> Since this is a pretty big patch, though, I wasn't sure the whole thing
> qualifies as "obvious", and wanted to give folks a chance to object
> before I check it in.  So I propose to push it to trunk in a week if I
> don't hear any objection or review (or promise to review) meanwhile.
>
> -Sandra